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1 | Manual | Users Manual | 1.34 MiB |
KROHNE 11/2000 DIN A4: 7.02182.37.00 US size: 7.02182.77.00 GR/LP Installation and operating instructions
(Reference Manual) Level Radar BM 70 A / BM 70 P Non-contact level gauging using electromagnetic waves Status: 05-1998 Variable area flowmeters Vortex flowmeters Flow controllers Electromagnetic flowmeters Ultrasonic flowmeters Mass flowmeters Level measuring instruments Communications engineering Engineering systems & solutions 8. User interface ..........................................35 8.1 Local display .........................................35 8.2 Function of the keys ...............................36 8.3 Operator control concept ........................37 8.4 Table fo settable functions
(Version 3.00, 3.03, 4.02, 4.03) .............39 8.5 Configuration examples..........................42 8.6 Description of functions ..........................44 8.7 Functional checks...................................55 8.8 Pointers and error messages during measurements.......................................56 8.9 Messages on start-up.............................58 8.10 Faults and symptoms during start-up and measurement .................................58 8.11 Calculation of the measured value .......61 8.12 User program PC-CAT for Windows .........................................62 9. Power supply ..........................................63 9.1 Options, technical data...........................63 9.2 Fuses ....................................................63 9.3 Changeover of operating voltage and replacement of fuses .............................63 9.4 Advice on safety.....................................64 10. Certificates and approvals....................66 10.1 Hazardous-duty approvals.....................66 10.2 Other approvals and certificates ...........66 10.3 Explosion proof acc. to ATEX ...............67 10.4 Radio approval .....................................68 10.5 CE manufacturers declaration...............69 11. Order information .................................70 12. External standards, codes and directives ..............................................71 13. Quality assurance .................................71 Annex Annex A: Technical Data ............................72 Annex B: Type code / nameplates...............74 Annex C: Spare parts .................................77 Annex D: Signed declaration to accompany a device returned to KROHNE ....80 Annex E: Table on documentation of device configuration ....................81 Annex F: Index............................................82 Contents:
General advice on safety ................................3 Product liability and warranty .........................3 Items included with supply ..............................3 Software history ..............................................4 1. Range of application ................................6 2. Mode of operation and system structure.6 2.1 Operating principle ...................................6 2.2 Signal processing (digital) .........................7 2.3 Modularity (signal converter, flange, antenna)....................................................7 3. Input...........................................................8 3.1 Measured variable (distance, level, volume, reflection) ....................................8 3.2 Measuring range [0.5-35/40 m
(1.64-115/131 ft)] .....................................8 3.3 Block distance...........................................8 3.4 Out-of-range performance.........................8 4. Output........................................................9 4.1 Variants.....................................................9 4.2 Ex-e current output HART ....................10 4.3 Ex-i current output HART
(type of protection: Ex de [ia]) ................10 4.4 HART communication............................11 4.5 Current output (non-communicable) .......11 4.6 Digital interface RS 485 .........................11 4.7 Breakdown signal ....................................13 4.8 Digital input .............................................13 5. Measuring accuracy................................14 5.1 Reference conditions...............................14 5.2 Error of measurement ............................14 5.3 Repeatability ...........................................15 5.4 Measured value resolution/hysteresis .....15 5.5 Transient recovery time ..........................16 5.6 Turn-on drift / turn-on characteristics ......16 5.7 Long-term drift .......................................16 5.8 Effect of ambient temperature ................16 6. Operating conditions .............................17 6.1 Installation conditions .............................17 6.2 Ambient conditions..................................25 6.3 Product conditions...................................26 6.4 Maintenance ......... ................................27 7. Design......................................................28 7.1 Models ..... ............................................28 7.2 Dimensions and weights .........................29 7.3 Replacement of the signal converter .......30 7.4 Field assembly ........................................30 7.5 Selection of antenna type and size..............31 7.6 Materials of construction .........................32 7.7 Process connection .................................32 7.8 Electrical connection ...............................33 7.9 Terminating resistor for the RS 485 interface .....................................34 BM 70 A/P Montage- und Betriebsanleitung Seite: 2 11/00 General advice on safety:
To carry: the device will weigh between approx. 16 kg (35.5 lb) and 30 kg (66.1 lb) or more! To carry, use both hands to lift the device carefully by the converter housing. If necessary, use lifting gear. When handling the BM 70 A/P, avoid hard blows, jolts, impacts, etc. Product liability and warranty:
The BM 70 A/P level gauge is designed solely for measuring the distance, level, volume and reflection of liquids, pastes, slurries, solids and particulate materials. The BM 70 A/P level gauge does not form part of an overfill protection system as defined in WHG. Special codes and regulations apply to its use in hazardous areas. Responsibility as to suitability and intended use of these level gauges rests solely with the user. Improper installation and operation of our level gauges may lead to loss of warranty. In addition, the "General conditions of sale", forming the basis of the purchasing contract, are appli-
cable. If you need to return the level gauge to the manufacturer or supplier, please refer to the information given in Annex D. Items included with supply:
The scope of supply encompasses, in the version as ordered:
Signal converter bolted to waveguide window and antenna Optionally: antenna extension, sunshade (with fastening material in each case) Shielding material with strap retainer (not for the US market) Report on factory settings for the signal converter Bar magnet for operator control / parameter assignment (only in version with local display) Wrench for the covers Installation material (stud bolts, flange gasket and cabling) not supplied, to be provided by customer!
Documentation supplied:
Condensed instructions: installation, connection, start-up and safety advice in condensed form, but sufficient for most applications. Please read through these instructions first!
Instruction card: overview of the configuration menu and meaning of the markers in cheque card format. Installation and operating instructions (this manual): detailed user manual and reference book, including description of special versions and functions. This documentation is structured on lines similar to those given in the DIN V 19259 Standard. Approval documents, unless reproduced in the installation and operating instructions. Installation and operating instructions BM 70 A/P Page: 3 11/00 Software history Signal Converter Firmware For BM 70 A:
Introduction Mth./Yr 06/97 01/98 Firmware Version 3.00PREnn 3.00 05/98 07/99 3.01 3.02 11/99 3.03 For BM 70 P:
Introduction Mth./Yr 05/98 07/99 11/99 Firmware Version 4.00PREnn 4.01PREnn 4.02PREnn 4.02 4.03 Remarks Device Instructions 06/97 11/97-11/00 First serial version. Errors when empty spectrum recorded Test versions with WAVE-STICK; automatic reset when signal is extremely weak. 11/97-11/00 Elimination of errors in V. 3.00; improved application of empty spectrum at tank bottom. 05/98-11/00 Implementation of the ModBus protocol; adaptation to PROFIBUS interface; improved application of empty spectrum at tank bottom; improvement of PC-CAT protocol switching in multidrop operation; definition of 3.6 mA as lower error current for the IS current output; improved tank bottom tracing; improved spectrum evaluation at tank heights > 15 m. 05/98-11/00 Correction of a bug in the mode "Hold on Error" (output current went to 1 mA or 3.6 mA; only V. 3.02); Adaption of the HART protocol for operation with the program AMS, and some smaller error corrections; Improved "tank bottom recognition" (measured value now always goes to the programmed tank bottom position); If no measured value is found after start-up, the instrument goes directly into "tank bottom recognition" and the local display to level = 0, if Fct. 3.2.5 Error Messages = NO is set. Device Instructions 05/98 Remarks Test versions 05/98-11/00 First serial version. 05/98-11/00 Correction of a bug in the mode "Hold on Error" (output current went to 1 mA or 3.6 mA; only V. 4.02); Adaption of the HART protocol for operation with the program AMS, and some smaller error corrections; Improved "tank bottom recognition" (measured value now always goes to the programmed tank bottom position); If no measured value is found after start-up, the instrument goes directly into "tank bottom recognition" and the local display to level = 0, if Fct. 3.2.5 Error Messages = NO is set. Installation and operating instructions BM 70 A/P Page: 4 11/00 Compatibility between PC-CAT Software and BM 70x Level-Radar Instruments Software (1) Operating System PC-CAT (DOS) 1.00 PC-CAT (DOS) 2.00 (4) PC-CAT (DOS) 2.10/2.11 (4) PC-CAT (DOS) 2.30 DOS 3.00 DOS 3.00 DOS 3.00 DOS 5.00 (7) BM 70 BM 70 Nautic YES (2) YES (3) YES YES PC-CAT (DOS) 3.00 PC-CAT (DOS) 3.01 PC-CAT Windows 4.00/4.01 PC-CAT Windows Lite 4.01 DOS 5.00 (7) DOS 5.00 (7) Windows 95,98,2000,NT Windows 95,98,2000,NT YES YES NO NO I N S T R U M E N T S BM 70 A BM 70 P BM 700 BM 702 NO NO NO Up to firmw. 3.02/4.02 (5) Up to firmw. 3.02/4.02 YES YES YES NO NO NO Up to firmw. 5.02 (5) Up to NO NO NO NO NO firmw. 5.02 YES YES YES YES (6) YES YES
(1) table is not including PRE versions of PC-CAT
(2) limited to configuration parameters up to firmware 2.02/2.10
(3) limited to configuration parameters up to firmware 2.20
(4) Attention!! Does not run on fast PCs !!
(5) with reduced display and configuration capability
(6) not with firmware 7.00/PRE0x
(7) or DOS-Window in Windows 3.1x, 9x (not Windows NT, 2000) Installation and operating instructions BM 70 A/P Page: 5 11/00 1 Range of application The BM 70 A/P Level-Radar level gauging system is designed to measure the distance, level, volume and reflection of liquids, pastes, slurries, solids and particulate materials. It can be operated on storage and process tanks and also on stilling wells. BM 70 P is specially designed for applications on storage tanks with highest precision requirements. BM 70 A/P Ex hazardous-duty versions are suitable for use in Ex-Zone 0, 1 and 2. In Germany (and, depending on the respective radio approval, in some other countries as well) its use is restricted to closed tanks or containers made of metal or concrete. Because of the low output involved, however, the microwaves are not harmful to human beings. 2 Mode of operation and system structure 2.1 Operating principle (FMCW-Radar) A radar signal is given via an antenna, reflected on the measuring surface and received after a delay time t. FMCW: Frequency Modulated Continuous Wave The FMCW-radar uses a high frequency signal (~10 GHz) which transmit frequency increasing linearly 1 GHz during the measurement (frequency sweep) (1). The signal is emitted, reflected on the measuring surface and received time-delayed (2). For further signal processing the difference f is calculated from the actual transmit frequency and the receive frequency (3). The difference is directly proportional to the distance i.e. a large frequency difference correspond to a large distance and vice versa. The frequency difference is transformed via a Fourier transformation (FFT) into a frequency spectrum and then the distance is calculated from the spectrum. The level results from the difference between tank height and distance. Linearity of frequency sweeps The measuring accuracy of a FMCW radar is determined from the linearity of the frequency sweeps and their reproducibility. The linearity correction is deduced via reference measurement of the oscillator. The non-linearity is corrected up to 98% (BM 700/BM 70 A). An immediate frequency regulation is necessary with the BM 70 P device because of the higher demand on the measuring accuracy. With the PLL technology (Phase Locked Loop) the signal frequency is directly recorded as a digital data and the converter oscillator locks automatically on the right frequency. 3) differential frequency formed f f 1) radar frequency linearly changed f antenna t 2) delay time due to wave propagation non-linear sweep linear sweep fStop fStart Installation and operating instructions BM 70 A/P Page: 6 11/00 As the transmit frequency is changed during a short time interval by FMCW radar the transmitted frequency has to follow the nominal frequency within micro seconds. This ensues via modern, fast electronic and processors. PLL structure Microprocessor control Reference oscillator Microwave oscillator Phase detector Loop filter Antenna 2.2 Signal processing (digital) The radar signals are digitally processed by a microprocessor. The processing system is based on intelligent procedures that allow for plausibilities and history. The following diagram describes the path of internal signal processing:
measurement signal gain switch V filter gain control analog to digital conversion spectrum Fourier transform plausi-
spectrum bility interpolation distance corrected spectrum empty tank spectrum After automatic gain control, the measuring signal is filtered, digitized and converted into a frequency spectrum by means of the Fourier transform. Plausibility of the value obtained is assessed with the aid of the so-called empty-tank spectrum, which contains information about constant interference reflectors. Interpolation of the spectrum helps to improve resolution of the measured value. 2.3 Modularity (signal converter, flange, antenna) The measuring system consists of the flange system and the signal converter. The flange system contains the microwave window separating product from pressure, and the antenna system. The compact signal converter contains the microwave generator and the entire signal processing system, including provision of a standardized output signal (4 - 20 mA or digital interface). The signal converter can be separated from the flange system under process conditions, without loss of pressure or escape of product. Converter Flange with micro-
wave window Antenna system O O O O Installation and operating instructions BM 70 A/P Page: 7 11/00 3 Input 3.1 Measured variable (distance, level, volume, reflection) The primary measured variable is the distance between a reference point (as standard: tank mounting flange) and a reflecting surface (e.g. surface of the liquid). The filling level is determined by allowing arithmetically for the entered tank height. Volume measurements are possible by entering a conversion table (max. 50 points). The strength of the reflected signal can be measured for qualitative assessment of the tank product or its surface. 3.2 Measuring range [0.5-35/40 m (1.64-115/131 ft)]
Minimum tank height Maximum measuring BM 70 A BM 70 A mit Wave-Stick BM 70 P 0.5 m (1.64 ft) 40 m (131 ft) / optionally 100 m (328 ft) 20 m (65.62 ft) 35 m (115 ft) The useful range will depend on the antenna size, the reflection properties of the tank product, the installation position, and the presence of interference reflectors (see Sections 6.1 and 7.5). 3.3 Block distance The block distance is the minimum measured distance between the mounting flange (reference point) and surface of the tank product. Recommended minimum values: see following sketches. Horn antenna without stilling well:
Antenna size* = Type3: 22cm/8.7"; Type4: 34cm/13";
* Hastelloy: +3cm / 1,2 "
Recommended antenna distance:
Storage tanks: 10cm/4"; Process tanks: 20cm/8"
Product surface Block distance Maximum level The length of any antenna extension used must be added on!
Stilling well / Wave-Guide Wave-Stick Antenna size * = Type1: 11cm/4";
Type2: 15cm/5.5"; Type3: 22cm/8.7"
Wave-Stick SW: 6cm/2.4"
(Wave-Guide: no antenna) Recommended antenna distance =
30 cm / 12"
* Hastelloy: 3 cm (0.4") Product Standard:
384 mm/15.1"
max. 200 mm 8"
Product Minimum block distance =
Standard:
Normal:
184 mm Rod length - 200 mm (7.87") 3.4 Out-of-range performance When the level measuring range is exceeded (including flooding) the measured value will stick at the
(adjustable) block distance (see Sect. 8.6.14). If the measured value drops below the level range, it will stay put at the set lower range limit (distance
= tank height). Installation and operating instructions BM 70 A/P Page: 8 11/00 4 Output 4.1 Variants Variants Remarks Ex-e current output HART Ex-e; active; HART protocol;
Ex-i current output HART Current output RS 485 + current output PROFIBUS-PA Foundation Fieldbus (FF) together with switching output and digital input intrinsically safe; passive; HART protocol
(optionally with intrinsically safe switching output) Ex-e; active; non-communicable BM70 protocol or ModBus-RTU or HART intrinsically safe; see Supplementary Instructions intrinsically safe; see Supplementary Instructions Described in Section 4.2 + 4.4 4.3 + 4.4 4.5 4.6 + 4.5
All versions with HART or BM70 protocols can be operated with the PC-CAT PC program (see Section 8.12). Overview of digital Communication possibilities:
BM 70 A RS 485 Modbus PROFIBUS-PA
........... Other communication interfaces 4 ... 20mA
+ HART Converter HART FIELD COMMUNICATIONS PROTOCOL F1 F2 F3 F4 HART Communicator I O
A B C D E F G H I 7 8 9 J K L M N O P Q R 4 5 6 S T U V W X Y Z /
1 2 3
0 . _*
HART-
HHC PC-CAT or HART specific software and operating devices Point-to-point RS 485 4mA (Ex i)
+ HART HART FIELD COMMUNICATIONS PROTOCOL F1 F2 F3 F4 HART Communicator I O
A B C D E F G H I 7 8 9 J K L M N O P Q R 4 5 6 S T U V W X Y Z /
2 3 1
0 . _*
HART-
HHC HART-Master Multidrop Tank Inventory System Installation and operating instructions BM 70 A/P Page: 9 11/00 4.2 Ex-e current output HART Function Level, distance, volume (conversion table) or reflection, and error identification;
galvanically isolated from digital input and switching output 4-20 mA; without or with error message (2 mA and 22 mA) 0.05 % (rel. 20 mA; at T = 20C, 100 load impedance and nominal operating voltage)
< 100 ppm/K (typically 30 ppm/K)
< 500 Current Accuracy/linearity Temperature drift Load impedance Effect of load impedance < 0.02 % (rel. 20 mA for RB = 0...500 ) Effect of power Hazardous-duty version: Ex e Note:
together with switching output and digital input
< 0.02 % (rel. 20 mA for UB within limits of tolerance) Digital input (terminals 81/82):
Can be used to suspend the entire measurement procedure, i.e. measurements are "frozen" (standard setting), or to hot start the device (reprogra mming by KROHNE Service). Applicable voltage: 5...28 V DC Input resistance: > 1 k Switching output (terminals 41/42):
Can be progra mmed as a limit switch, alarm contact or error message. The contact is open in the de-energized condition. Operating data: max. 100 mA / 30 V DC or 30 V AC. Internal resistance: < 20 Current 4.3 Ex-i current output HART (type of protection: Ex de [ia]) Function Level, distance, volume (conversion table) or reflection;
and error identification;
passive output (current sink) 4-20 mA; without or with error message (3.6 mA / 22 mA);
-Multidrop 4 mA constant, adjustable for HART
< 100 ppm/K (typically 30 ppm/K) 0.05 % (rel. 20 mA; at T = 20C, 10 V supply voltage and nominal operating voltage) 8-30 V (between terminals 31 and 32)
< (US - 8V) / 22 mA (US = external supply voltage) Temperature drift Accuracy/linearity Supply voltage U Load impedance Effect of supply voltage < 0.02 % (rel. 20 mA for U = 8...30 V) Effect of power Note:
< 0.02 % (rel. 20 mA for UB within limits of tolerance) Digital input not available. Optional switching output (terminals 41/42):
can be progra mmed as limit switch, alarm contact or error message. The contact is open in the de-energized condition. Operating data: 6...30 V; ILow < 110 mA; ULow < 2V; IHigh < 900 A (U=30V) and IHigh = 200 A (U=8V) Ex-i safety limits Signal circuit in type of protection: Intrinsic Safety EEx ia IIC/IIB or EEx ib IIC/IIB for connection to a certified intrinsically safe circuit with the following peak values:
Uo = 30 V; Ik = 250 mA Effective inner capacitance 0; effective inner inductance 0 Installation and operating instructions BM 70 A/P Page: 10 11/00 4.4 HART communication The HART Communications protocol can, in accordance with the Rosemount Standard, be used with a BM 70 A/P. Electrical connection: see Section 7.8. There are two ways of using the HART Communication:
a) As a point-to-point connection between the BM 70 A/P and the HART master equipment. A BM 70 A/P can be used either with an Ex-e current output HART or with an Ex-i current output HART. HART Master 4...20 mA b) As a multipoint connection (multidrop) with up to 15 devices (BM 70, BM 70 A/P or other HART equipment), in parallel on a 2-wire bus:
A BM70 A/P is normally used with Ex-i current output, but an Ex-e current output can also be used
(constant 4 mA in both cases.) HART Master 4mA 4mA 4mA 4mA other HART device other HART device 4.5 Current output (non-communicable) Function Level, distance, volume (conversion table) or reflection, and error identification 4-20 mA; without or with error message (2 mA and 22 mA) 0.3 % (rel. 20 mA; at T = 20C, 100 load impedance and nominal operating voltage)
< 200 ppm/K (typically 70 ppm/K)
< 250 Current Accuracy/linearity Temperature drift Load impedance Effect of load impedance < 0.1 % (rel. 20 mA for RB = 0...250 ) Effect of power Hazardous-duty version: Ex e
< 0.1 % (rel. 20 mA for UB within limits of tolerance) When operated as a switching output (digital output):
Function Low status High status No-load voltage limit switch, alarm contact or error message current < 2 mA current = 22 mA (when load < 250 )
< 18 V 4.6 Digital interface RS 485 RS 485 is a bus that allows two-way Communication (half-duplex operation) with the BM 70 A/P Level-Radar. When the computer system sends out a request, the BM 70 A/P transmits: level, distance; volume (conversion table), reflection, setting parameters and status. A PC can configure any BM 70 A/P via the bus (RS 485/RS232 converter required) by means of the PC-CAT program, provided no master is active. The maximum cable length - excluding amplifier - is 2000 m. Installation and operating instructions BM 70 A/P Page: 11 11/00 Transmission rate:
Address:
Protocols:
V.3.02/4.02) Additional current output:
Note:
1200 to 38400 bauds 0 to 255 KROHNE Protocol, HART, Modbus RTU
(from firmware Additional information: see "BM 70 A/P Communication RS 485"
instructions The current output is conductively coupled to the RS 485 interface. Technical data: see Section 4.5 Switching contact and digital input are not available. However, the current output can be configured as a switching output. Various bus configurations A) Connection of a BM 70 A/P as a single RS 485 user:
Computer system Bus line (2 shielded wires) RS485 connection must be terminated with 120 ohms
(if necessary insert resistor between A and B) with termination resistance 120 ohms B) Connection of several BM 70 A/P in the RS 485 bus system via stubs to the bus cable:
Computer system RS485 connection must be terminated with 120 ohms
(if necessary insert resistor between A and B) Bus line (2 shielded wires)
........... without termination resistance without termination resistance without termination resistance with termination resistance 120 ohms C) Connection of several BM 70 A/P in the RS 485 bus system, with bus cable looped through to further field instruments:
Computer system RS485 connection must be terminated with 120 ohms
(if necessary insert resistor between A and B) Bus line (2 shielded wires)
........... without termination resistance without termination resistance without termination resistance with termination resistance 120 ohms Notes:
If other devices are operated together with the BM 70 A/P Level-Radar on one bus, all devices must use the same Communications protocol (e.g. ModBus devices of different makes or BM 70 A/P and TTM 70 with KROHNE Protocol). When "HART" is set as the protocol type, use only the protocol in keeping with the "HART Specification". The "Hardware Implementation RS 485" does not conform to the HART Standard
(see Sections 4.2 and 4.3). Installation and operating instructions BM 70 A/P Page: 12 11/00 Since signal reflections at the line ends can interfere with Communication, both the line beginning
(at the computer system) and the line end (at the last device) should be terminated with the typical surge impedance of the cable (120 ). To do this inside the BM 70 A/P: see Section 7.9. 4.7 Breakdown signal Breakdown information can be called up via the following interfaces:
Local display: flashing display, plain text information Current output: error signal 2 mA (Exi = 3.6 mA) or 22 mA Switching output: contact opens or closes Digital interfaces: interrogation of error flags 4.8 Digital input The digital input (for electrical data: see Section 4.2) can be used for temporarily "freezing" measure-
ments or for carrying out a hot start. It is only available in the "Ex-e current output HART" version. The "freeze" function can be used to blank out larger, temporary interferences, e.g. very slow agitator, slide gate, ball valve in the stilling well. The last measured values in each case are present at outputs I and S, and in the display. The digital input is also taken into account when the empty-tank spectrum is being recorded (totalizer does not continue). marker 6 in the display indicates that the digital input is active in the "freeze" function. NOTE: The function of the digital input is set as standard to "freeze". To switch the function to "hot start" or to deactivate it completely, the setting will need to be changed in the Service menu of the BM 70 A/P Installation and operating instructions BM 70 A/P Page: 13 11/00 5 Measuring accuracy 5.1 Reference conditions Temperature = +20C / +68F Pressure = 1013 mbar abs. / 14.5 psia Air humidity = 65%
Highly reflecting product (e.g. water) with calm surface Tank diameter > 5 m / 16.4 ft Mounted at least 1/7 x tank height away from tank edge (BM 70 P: 1/5 x tank height) No interference reflections inside the radiation lobe ( 6...9; see Section 6.1.1) 5.2 Error of measurement Since the measuring process primarily determines distance, measuring accuracy can only be specified as a function of the distance. For that reason, all figures given in this Section 5 refer to the measured distance. BM 70 A: With antenna type 3 (139 mm / 5.47") or type 4 (200 mm / 7.87") or stilling well or Wave-
Guide Accuracy inch cm 12 4.8 4 3.2 2.4 1.6 0.8 0
-0.8
-1.6
-2.4
-3.2 10 8 6 4 2 0
-2
-4
-6
-8 1 cm (0.4") 0.3 %
-4
-10
-4.8
-12 0 block distance 1 3 5 16 10 33 15 49 20 66 25 82 30 98 35 115 Distance to flange 40 m 131ft BM 70 A Wave-Stick:
Accuracy inch cm 4.8 12 4 3.2 2.4 1.6 0.8 0
-0.8
-1.6
-2.4
-3.2
-4
-4.8 10 8 6 4 2 0
-2
-4
-6
-8
-10
-12 1.5 cm (0.6") 0.3 %
0 0.18 0.6 1 3 5 16 10 33 15 49 20 66 25 82 30 98 35 115 Distance to flange 40 m 131ft Installation and operating instructions BM 70 A/P Page: 14 11/00 BM 70 A Precision (with special calibration and certificate):
Only with antenna type 4 (200 mm / 7.87") or stilling well 80 - 200 mm dia. (3 - 8") Accuracy inch cm 12 4.8 4 3.2 2.4 1.6 0.8 0
-0.8
-1.6
-2.4
-3.2
-4
-4.8 10 8 6 4 2 0
-2
-4
-6
-8
-10 5 mm (0.2") 0.1 %
-12 0 block distance 1 3 5 16 10 33 15 49 20 66 25 82 30 98 35 115 Distance to flange 40 m 131ft
= calibration range
= not verified by calibration BM 70 P Only with antenna type 4 (200 mm / 7.87") or stilling well 100 - 200 mm dia. (4 - 8") Accuracy inch mm 12 0.48 20
... 30 mm 1 mm (0.04") 0.01 %
0.4 10 0.32 0.24 0.16 0.08 0
-0.08
-0.16
-0.24
-0.32 8 6 4 2 0
-2
-4
-6
-8
-0.4
-10
-0.48
-12 0 1 3 Block-
distance 5 16 10 33 15 49 20 66 25 82 30 98 35 115 40 m 131ft Distance to flange 5.3 Repeatability Repeatability is equal to half the value for the error of measurement. 5.4 Measured value resolution/hysteresis Measured value resolution is: 1 mm / 0.04" for BM 70 A, and 0.1 mm / 0.004" for BM 70 P Hysteresis is at least 20 times less than the error of measurement. Installation and operating instructions BM 70 A/P Page: 15 11/00 5.5 Transient recovery time The transient recovery time is determined by the setting parameter "time constant" (1 ... 100 s). The transient recovery time relative to 1% deviation from the steady-state value is approx. 4.6 times the time constant. However, in the case of unusually rapid changes in level, the transient recovery time may deviate from this figure. 5.6 Turn-on drift / turn-on characteristics A rough measured value is initially displayed about 1 minute after the BM 70 A has been switched on. The first self-calibration is completed after about 2 minutes. Full measuring accuracy is attained after 30 minutes operating time. The measured value from the BM 70 P is accurate directly after the startup phase (approx. 1.5 minutes). Typical turn-on drift (example):
Measured value BM 70 A BM 70 P 0 1 2 30 Time/min 5.7 Long-term drift The long-term drift is within the specified error of measurement. 5.8 Effect of ambient temperature Temperature coefficient, signal output:
Ex-e current output HART:
Ex-i current output HART:
Current output:
Digital interfaces:
< 100 ppm/C (typically: 30 ppm/C)
< 100 ppm/C (typically: 30 ppm/C)
< 200 ppm/C (typically: 70 ppm/C) no temperature effect The temperature has no effect on the measured value as the device carries out a regular self-calibra-
tion. The effect of temperature of the atmosphere above the liguid product results theoretically in -
1ppm/C for air. In respect of proof of temperature effect with the aid of reference measurements in liquid tanks, it needs to be borne in mind that liquids generally have a high coefficient of cubic expansion (organic liquids: typically 0.15 %/C)!
Installation and operating instructions BM 70 A/P Page: 16 11/00 6 Operating conditions Hazardous-duty systems The BM 70 A/P is certified in conformity with European Standard (ATEX) for use in Zone 0, 1 and 2 hazardous locations. The BM 70 A/P also has FM Approval (Factory Mutual) for CLASS I, DIV 1, GROUPS B,C,D;
CLASS II/III, DIV 1, GROUPS E,F,G. Attention is drawn to the information given on the nameplate and the specifications in the approval certificates. When carrying out installation, dismantling work or making electrical connections in the hazardous area, be sure to observe the pertinent wiring and installation regulations, e.g. as specified in VDE 0165. Within the scope of routine checks required to be carried out on systems operated in hazardous areas (maintaining the system in good working order), the "flameproof enclosure" (large cover on signal converter) should also be visually inspected for signs of external damage and corrosion. Before opening the "flameproof enclosure" (e.g. to inspect the inside or for repair purposes) make absolutely certain in the hazardous location:
- that the BM 70 A/P Level-Radar is disconnected from voltage, and then allow the prescribed waiting time of 22 minutes to elapse first,
- and that there is no explosion hazard (gas-free certificate!). Safety Operator control via the keys: on electrical safety grounds, operator control of the keys (below the display, with the housing open) may only be carried out by specialist personnel for service and repair work, on no account, however, when there is risk of explosion!
Surface temperature: the housing of the signal converter can, in extreme ambient conditions, assume temperatures of more than 70C (158F)!
6.1 Installation conditions Refer to Section 7.5 for selection of the optimum antenna type 6.1.1 Transmission angle The transmission angle is defined as the angle to the vertical, in which the power density of the radar waves assumes half the value of the maximum power density (half-power beamwidth):
Antenna Type Diameter mm (inches) Trans-
mission angle Lobe expansion s per metre distance 6 8 200 (7.87) 140 (5.51) 100 (3.94) 80 (3.15) 25 (0.98) 25-200 Type 4 Type 3 Type 2 *
Type 1 *
Wave-Stick Wave-Guide /
stilling well
* Should only be used in stilling wells; the transmission angle given applies to line-of-sight propagation, i.e. without stilling well. 10 cm (3.94) 14 cm (5.51) 22 cm (8.67) 30 cm (11.8) 16 cm (6.3) 9 Propagation only inside the
(0.98-7.87) stilling well 12 *
16 *
s Installation and operating instructions BM 70 A/P Page: 17 11/00 6.1.2 Recommendations for positioning on the tank A) Horn antenna or Wave-Stick without stilling well Antenna Type 3 or Wave-Stick Antenna Type 4 Recommended distance from the tank wall:
>1/7H, but max. 1/3D H
>1/10H, but max. 1/3D BM 70 P : > 1/5 x H H D D min. measurable level Lower measuring range limited when tank has tapered bottom. in one tank. Several BM 70 A/P can be operated Do not position in tank centreline!
(multiple reflections!) Do not mount dead centre on manhole cover!
(multiple reflections!) Do not position above internals!
(interference reflections!) If these recommendations cannot be followed because of the tank geometry, please consult KROHNE. Installation and operating instructions BM 70 A/P Page: 18 11/00 B) Stilling well or Wave-Guide A stilling well or Wave-Guide may be mounted in any position on the tank.
(For design layout: see also Section 6.1.4; for block distance: see Section 3.3). Stilling well application In a side vessel BM 70 A Wave-Guide A stilling well or Wave-Guide is positively recommended for horizontal cylindrical tanks
(to avoid multiple reflections):
6.1.3 Mounting on tank fitting A) Horn antenna Should be mounted on the tank fitting as close to the horizontal as possible (deviation < 2). Exception: if product surface is not horizontal, (e.g. particulate materials) the flange can be aligned roughly parallel to it. The antenna should project out of the fitting:
Antenna Type 4 Type 3
* Hastelloy: + 30 mm (1.2) Diameter D 200 mm (8) 140 mm (5.5) Length l*
335 mm (13.2) 223 mm (8.8)
(subject to change without notice) Tank nozzle L D Installation and operating instructions BM 70 A/P Page: 19 11/00 An antenna extension should be added if the antenna does not project out of the fitting:
Tank nozzle Antenna extension Antenna extensions are available from 100 to 2000 mm (3.94" to 78.74") in steps of 100 mm (3.94"). Several extensions can be joined up:
Exception:
When the tank fitting is sy mmetrical, the antenna may end in the fitting so as to enlarge the measuring range (minimum dead zone to tank cover, see Sect. 3.3 "block distance" and Sect. 5.2
"error of measurement"):
Tank nozzle Narrow tank fitting If the inside diameter of the fitting is smaller than the diameter of the antenna, and the fitting is accessible from inside the tank for mounting purposes, the antenna with extension can be mounted from the inside (not for versions made of titanium or tantalum). The antenna extension should be about 100 mm (3.94") longer than the height of the fitting. Tank nozzle Antenna extension Installation and operating instructions BM 70 A/P Page: 20 11/00 B) Wave-Stick Note the requirements pertaining to diameter and length of the tank fitting:
Tank nozzle max. X min. 50 mm/2"
Version Length L Standard L Option 384 mm
(15.12) 500...1000 mm
(19.7 - 39.4) 6.1.4 Mounting on stilling wells max. height of fitting X 150 mm
(15.12) L - 234 mm
(L - 9.2) Antenna Type 1 1s 2, 2s 3 3s 4, 4s Outside diameter 80 mm (3.15) 76 mm (2.99) 100 mm (3.94) 140 mm (5.51) 152 mm (5.98) 200 mm (7.87) If necessary, turn antenna to size!
Antenna size must match inside diameter A standard Wave-Stick will not function in a stilling well! For stilling wells 40-55 mm a type Wave-Stick SW can be used. Further requirements concerning stilling wells:
60mm The well must be electrically conductive. Minimum inside diameter of well: 40 mm (1.57"). (BM 70 P: 80 mm, better > 100 mm). If possible, use only smooth walled, straight stilling wells. If nevertheless an assembled stilling well is necessary, abrupt changes in diameter along the pipe should be less than 1 mm (0.04"). Surface roughness of the inside of the pipe should not be more than + 0.1 mm (0.004"). For the BM 70 P the antenna types 1s, 2s, 3s or 4s have to be used to achieve a high measuring accuracy. Installation and operating instructions BM 70 A/P Page: 21 11/00 It is possible to measure through a full-bore open ball valve if the valve and the pipe adapters above and below the valve are relatively smooth-walled. To ensure equalization of pressure, drill one or two small holes in the stilling well above the It is not possible to measure levels below the end of the stilling well. maximum filling level. If necessary, several holes can be drilled along the whole length of the pipe. All holes must be deburred. The holes should be as small as possible and spaced wide apart (Recommen-
dation: see drawing on the right). It is advisable to fit a reference point at the end of the stilling well in the form of a rod or screw of approx. 6 mm (0.24") diameter. See drawing below. max. 10 mm
/ 0.4"
min. 50 mm
/ 1.97"
6 mm 6 mm 0.24"
6.1.5 Wave-Guide The "Wave-Guide" is a pipe with an outside diameter of 30 mm (1.18") and an inside diameter of 25 mm (0.98"), that is bolted direct to the BM 70 A flange system (in the same way as an antenna extension). It functions like a stilling well and can be used for clean products. The Wave-Guide is not practical in conjunction with the BM 70 P as it will not provide high measuring accuracy. maximum length:
Ex:
Non-Ex:
max. 3 m (9.84 ft) (except tantalum: max. 1 m (3.28 ft)). up to 3 m (9.84 ft) without additional support Pipes longer than 3 m (9.84 ft) need to be fixed at two points. 6.1.6 Curved antenna extensions Rectangular and S-shaped extensions are available for particularly difficult operating conditions. Such extensions can be used in cases where the antenna is exposed to especially high temperatures and where there are problems of space, (e.g. to avoid internals; positioning the antenna away from the centre of sy mmetry; lateral mounting of the signal converter). Standard sizes (others on request):
271 (10.67") 300 (11.81")
7 6
. 0 1
1 7 2 R 110 (4.33")
2 7
. 2 1
3 2 3 Dimensions in mm (inches) Installation and operating instructions BM 70 A/P Page: 22 11/00 6.1.7 Special options for the flange Antenna heating/cooling device (> DN150/6") Double-walled antenna for cooling or heating, e.g. to avoid condensation (recommended for liquid sulphur). max. differential pressure at antenna:
Standard DN150
= 6 bar (87 psig) (information on other pressure levels provided on request) Purging device (> DN100) With connection for purging the inside surface of the antenna to prevent heavy deposits of product or to heat or cool the antenna. Hazardous-duty systems:
1. In Zone 0, the temperature of the heating system and antenna may not exceed 80 % of the ignition temperature of the stored material. 2. Continuous monitoring shall ensure, and operational inspections shall verify, that the 80% level of the ignition temperature stated in Point 1 above is not exceeded. If a liquid is used for purging, this may interfere with the functioning of the BM 70 A/P during the process. Continuous purging with gas is not a problem as it does not interfere with measurements. The purge connection is closed off by the manufacturers with a " screw. When this screw is removed to connect up a purging system, the operator is responsible for ensuring conformity with in connection with the purging circuit (e.g. fitting a flame trap). requirements
"Ex"
6.1.8 Ultimate installation on the tank After carefully positioning the BM 70 A/P on the tank fitting flange (not forgetting the gasket), align the BM 70 A/P and the gasket. Insert stud bolts and tighten nuts slightly (by hand). (These items not included with supply). Press shielding strip C* in the gap between tank flange and the BM 70 A/P flange and secure with strap retainer S* (both items included with supply). Strap retainer S* must fit closely and overlap both flanges.
* only required for European radio approvals Tighten down stud bolts and nuts firmly. The torque is dependent on the strength properties of the stud bolts and the pressure rating of the tank. C* = shielding strip B = BM 70 A/P flange S* = strap retainer F = tank flange Installation and operating instructions BM 70 A/P Page: 23 11/00 6.1.9 Sunshade A sunshade SD is recommended to protect the signal converter from the effects of direct sunshine from above. This will increase the overall installa-
tion height by approx. 20 mm. The sunshade is easily fitted/dismantled with the aid of 4 screws S (included). An Allen key (size 4 mm) is required.
0 4
. 2 1
5 1 3 353 (13.89") Dimensions in mm (inches) Installation and operating instructions BM 70 A/P Page: 24 11/00 6.2 Ambient conditions 6.2.1 Hazardous locations BM 70 A/P Ex is suitable for use in hazardous locations of the following zones: 0, 1, 2 Temperature classes: T6...T2; danger groups: IIA...IIC For further information: see Section 10. 6.2.2 Ambient temperature of signal converter BM 70 A/P with horn antenna or Wave-Guide:
-20 ... +55C
(-4 ... +131F) A "BM 70 sunshade" should be fitted if the converter is located in the open with the likelihood of strong insolation (see Section 6.1.9). 6.2.3 Flange temperature Horn antenna, Wave-Guide (Tamb* 50C):
Horn antenna, Wave-Guide (Tamb* 55C):
High-temperature version with distance piece and FFKM gasket (Kalrez 4079 or Parofluor V3819-75):
Kalrez 2035 gasket:
Viton gasket:
FEP-sheathed gasket:
Wave-Stick, permanently:
Wave-Stick, pressure-dependent (see 6.3.5), with no mechanical loading radial to the rod:
Wave-Stick, steam cleaning (CIP, SIP) for 30 minutes:
* Tamb is the ambient temperature of the signal converter
** Safety limit: +280C (536F) 6.2.4 Ambient temperature limits Signal converter:
Measuring function OK, but LCD "freezes up":
Functional upper limit, for max. 2 hours:
Flange system:
see Section 6.2.3 6.2.5 Storage temperature
-20 ... +60C (-4 ... +140F)
-30 ... +130C
-30 ... +120C
(-22 ... +266F)
(-22 ... +248F)
-30 ... +250C ** (-22 ... +482F)
-30 ... +210C
(-22 ... +410F)
(-22 ... +392F)
-30 ... +200C
-30 ... +200C
(-22 ... +392F)
-20 ... +100C
(-4 ... +218F) bis +150C (302F) max. +160C (320F) min. - 40C (-40F) max. +70C (+158F) 6.2.6 Environment class Locations exposed direct to open-air climate, D1 Severity in conformity with EN 60654-1 6.2.7 Protection category Signal converter:
IP 66 / IP 67 (equivalent to NEMA 6) Installation and operating instructions BM 70 A/P Page: 25 11/00 6.2.8 Shock resistance The device has been found to withstand the impact test in conformity with EN 61010, Section 8.2, with 0.5 J energy, and the drop test to prEN 50178:1994. 6.2.9 Vibration endurance limit Type test conditions: to IEC 68-2-6 and prEN 50178 (10-57Hz: 0.075 mm / 57-150 Hz: 1 g) 6.2.10 EMC The devices satisfy the requirements of EN 50081-1, EN 50082-2 and the NAMUR Recommendation. 6.3 Product conditions 6.3.1 Physical properties of the products Physical properties (such as density, viscosity, conductivity, relative permittivity, magnetic properties, etc.) have no effect on measurement results. The relative permittivity is merely required to have a minimum value in order to ensure reliable measurements (see Section 6.3.2). 6.3.2 Relative permittivity (r 1.5) The (relative) permittivity of the product (r , Epsilon-R) determines the strength of the reflected signal. Measurement results are not affected so long as the reflected signal is strong enough, but reliability and the maximum measuring range are dependent upon the relative permittivity. At r < 3, a stilling well should be used. The minimum relative permittivity of the product is approximately r = 1.5. See also Section 7.5. If the Wave-Stick is also to take measurements when immersed, r will need to be > 4. Dielectric Constant and Reflection Factor R 70%
60%
50%
40%
30%
20%
10%
0%
1 1.2 1.6 2 LPG Paraffin 2.5 3.2 Benzene Toluene Petrol Chlorine Sulfur 5 4 Phosgene 6.3 8 10 Phenol 12 16 20 25 32 Sulfuric acid 40 Glycol 50 63 80 Water r Methanol Nitrobenzene U S E A B L E R A N G E Installation and operating instructions BM 70 A/P Page: 26 11/00 6.3.3 Product limitations Radar-based level measuring devices are not suitable for the following products:
liquid a mmonia (NH3) liquid hydrogen (H2) liquid helium (He) 6.3.4 Product temperature (unrestricted) The product temperature is not a relevant factor, provided the ambient temperature (see 6.2.2) and the flange temperature (see 6.2.3) are within the specified limits. 6.3.5 maximum allowable operating pressure (max. 64 bar / 928 psig) Flange system with horn antenna or Wave-Guide:
PN 16 PN 25 PN 40 PN 64 DN 80 DN 100 DN 150 DN 200 64 bar (928 psig) 16 bar (232 psig) 16 bar (232 psig) 55 bar (798 psig) 16 bar (232 psig) 47 bar (682 psig) 16 bar (232 psig) 45 bar (653 psig) Information on higher pressures (up to 400 bar / 5800 psig) supplied on request 40 bar (580 psig) 38 bar (551 psig) 34 bar (493 psig) 32 bar (464 psig) 25 bar (363 psig)
Wave-Stick without plate resp. LP flange system: max. 2 bar / 29 psig Wave-Stick with plate: max. 16 bar, dependent on temperature:
bar psig
+16 232 Pressure
+1
+15
-1
-15
(46 - 0.3T[C]) bar
(740 - 2.4T[F]) psig
-20
-4 Temperature T
+100
+212
+150 C
+302 F 6.4 Maintenance Cleaning the antenna Particular process applications can cause severe contamination of the antenna. Microwaves cannot be properly emitted or received when reflected from deposits on the antenna. In such cases, the BM 70 A/P will usually indicate maximum level (volume) or minimum distance. The level of contamination at which such errors occur depends firstly on the product concerned, and secondly on the reflection index, which is mainly determined by the relative permittivity r. Regular cleaning, or use of the purging device (see Sect. 6.1.7), is advisable if the product has a tendency to form deposits, etc. When spraying, washing down, or cleaning with mechanical aids, take special care not to damage either the horn antenna or the bottom Teflon plug at the waveguide window (see Section 7.4 "Field assembly of the BM 70 A/P"). If cleaning agents are used, take material resistance into account!
Installation and operating instructions BM 70 A/P Page: 27 11/00 7 Design Hazardous-duty systems The BM 70 A/P-Ex is approved to European Standard EN 50014/18/19/20 for use in hazardous locations of Zones 0, 1 and 2. Electronics compartment: Flameproof Enclosure "d"
Terminal compartment:
Increased Safety "e" for signal output and power supply Optionally: Intrinsic Safety "i" for the signal output and Increased Safety "e"
for the power supply. Special version: Flameproof Enclosure "d"
Pin coupler compartment: Increased Safety "e"
Further details are given in the Certificates of Conformity, see Section 10, and in the
"Hazardous-duty systems" boxes (shaded grey in the text, e.g. at the beginning of Section 6), which should without fail be additionally heeded for the BM 70 A/P-Ex. 7.1 Models BM 70 A/P with horn antenna BM 70 A Wave-Guide BM 70 A Wave-Stick Installation and operating instructions BM 70 A/P Page: 28 11/00 7.2 Dimensions and Weights Basic version:
313 (12.32") 226 (8.89") 214 (8.42") 176 (6.89") High-temperature version:
313 (12.32") 226 (8.89")
4 5
. 6 1
0 2 4 f Meter size DN ( mm) ANSI (") 80 100 150 200 80 100 150 200 3 4 6 8 3 4 6 8 Standard antenna Lenght*
Weight Typ 1 2 3 4 1s 2s 3s 4s A ( mm) A (") 3,15 3,94 5,51 7,87 2,99 3,94 5,98 7,87 80 100 140 200 76 100 152 200 f ( mm) 110 148 223 335 420 620 820 820 f (") 4,33 5,83 8,78 13,19 16,54 24,41 32,28 32,28 kg 17 18 23 30 18 19 25 32 lb 37,48 39,68 50,71 66,14 39,68 41,89 55,12 70,55
* Hastelloy: + 30 mm (1.12) Wave-Stick:
313 (12.32") 226 (8.89") Wave-Stick with hygienic connections:
(DIN 11851 "dairy") (with adapter for Tri-Clamp) 260 292 25 (0.98") L L = 384 mm Standard 500 1000 mm optional 60 mm Typ SW 384 351 dia. A in mm (inches) Weight in kg (lb) Flange size 100 (3.94) DN 50 / ANSI 2"
127 (5.0) ANSI 3"
DN 80 138 (5.43) DN 100 / ANSI 4" 158 (6.22) DN 150 / ANSI 6" 216 (8.5) 16 (35.27) 17 (37.5) 17 (37.5) 18 (39.7) 23 (50.7) Options:
Tri-Clamp 2", 3", 4"
SMS 51 mm, 63 mm, 76 mm DIN 11851 (dairy) DN 50, DN 65, DN 80 Installation and operating instructions BM 70 A/P Page: 29 11/00 7.3 Replacement of the signal converter Always disconnect from power source before commencing work!
Hazardous-duty systems Before replacing the signal converter (instrument "head") in the hazardous location, make absolutely certain that there is no explosion hazard (gas-free certificate). Allow the prescribed waiting time of 22 minutes to elapse before opening the housing!
1. Remove safety lock (see Sect. 9.3) with machinist's wrench, size 4 mm, and unscrew cover from the terminal box with the special wrench. If a sunshade is fitted, remove this first (see Section 6.1.9). 2. Disconnect all cables from the terminals in the terminal compartment, see Section 7.8. 3. Remove the 4 Allen screws M (Allen key size 5 mm) and lift off the signal converter. The flange unit (incl. waveguide window) will remain tight, also on pressurized tanks. Caution On pressurized tanks, do not on any account remove the 4 screws H connecting the waveguide window to the BM 70 A/P flange! DANGER TO LIFE!
Install the new BM 70 A/P signal converter. 4. 5. Check power voltage and fuse(s) (refer to instrument nameplate) and change or replace if neces-
sary, see Sect. 9.2 and 9.3. 6. Reconnect all cables in the terminal compartment as described in Sect. 7.8. 7. Check against the attached report on settings whether the factory-set parameters are correct for your application. If not, reset the parameters as described in Sect. 8. 8. Subsequently, record the empty-tank spectrum, see Sect. 8.6.12. Important:
Ensure that the screw thread of the covers on the terminal and electronic compartments is well greased at all times. 7.4 Field assembly When the BM 70 A/P needs to be field assembled, all required parts are included with the supply (stud bolts, washers, etc.). If supplied loose, bolt the waveguide window (flange assembly) or the distance piece to the BM 70 A/P. Tightening torque for the 4 Allen screws M (key size SW 5 mm): max. 8 Nm ~ 0,8 kpm. Note: The upper Teflon plug must be absolutely dry and clean! Moisture and dirt will negatively affect functionability of the BM 70 A/P!
Bolt antenna and antenna extension together: torque for the 3 stud bolts: max. 8 Nm ~ 0.8 kpm. Do not on any account detach screws H!
M M signal converter O-ring distance piece (for high-temperature version up to 250C (482 F) H BM70 A connecting flange upper Teflon plug O-ring antenna extension lower Teflon plug antenna Installation and operating instructions BM 70 A/P Page: 30 11/00 7.5 Selection of antenna type and size This BM 70 A recommendation for the optimum application range is based on application experience and designed to minimize potential problems. If the recommended antenna is unacceptable, any other configuration may also be tested. Type 1 and 2 antennas should only be used with stilling wells. For BM 70 P always antenna type 4 or a stilling well > 100 mm / 4" is recommended. tank height/
range 130ft 40m 115ft 35m 100ft 30m 85ft 25m 65ft 20m 45ft 15m 30ft 10m 15ft 5m 5ft 1.5m 1.6ft 0.5m stillwell stillwell antenna type 4 stillwell antenna type 4 antenna type 3 Wave-Stick stillwell Wave-Stick Dielectric constant of the medium for:
storage tank with smooth surface process tank or foam agitator tank with vortex r r r stillwell 1.5 2 2 2 3 4 3 5 8 5 10 15 8 15 30 How to use the diagram:
Determine the following application parameters:
a) Tank height or maximum measuring range/distance (e.g. H=15m) b) Tank type (one of the three types shown, e.g. process tank) c) Relative permittivity of the product (e.g. r=5) Find the relative permittivity on the relevant horizontal axis (e.g. 5 on the middle axis) Draw a line up to the required tank height = vertical axis (e.g. 15 m) The end of the line defines the application range. The text contained in that area indicates the suitable antenna types (in the example: stilling well or Type 4). Installation and operating instructions BM 70 A/P Page: 31 11/00 7.6 Materials of construction Check the materials of the antenna, extension, flange, gaskets, and PTFE (contained in all versions) for compatibility with the product!
7.6.1 Signal converter Housing:
Sight window: Glass Aluminium with electrostatic powder coating to DIN 55990-3. 7.6.2 Flange system
(Antenna, extensions and flange or flange plating) Available materials for BM 70 A/P flange systems (in contact with the product):
Versions mit horn antenna or Wave-Guide:
Stainless steel Stainless steel Hastelloy C4 Hastelloy B2 Titanium Tantalum Monell 400 Inconell 600 DIN No. 1.4571 1.4435 2.4610 2.4617 3.7035
2.4360 2.4816 AISI equivalent 316 Ti 316 L
(Information on other materials supplied on request) Wave-Stick:
In the versions with PTFE flange plate, only PTFE is in contact with the product (no metal in contact with the tank contents) Flange made of stainless CrNi steel 1.4571 / 316 Ti 7.6.3 Seals and gaskets Responsibility as to suitability rests solely with the user. Available materials for internal device seals and gaskets in the flange system in contact with the product:
Material FFKM (Kalrez 4079 or Parofluor V8545-75) 250C/482F (safety limit 280C / 536F) DuPont Kalrez 2035 Viton (FPM) FEP-coated 210C/410F 200C/392F 200C/392F Temperature resistance 7.7 Process connection The process connection is by way of standard flanges sized DN 50-200 or equivalent ANSI sizes
(dependent on the version). Various hygienic connections are additionally available for the Wave-
Stick (DIN 11851, Tri-Clamp, SMS). Refer to Section 7.2 for further information on the various versions. Installation and operating instructions BM 70 A/P Page: 32 11/00 7.8 Electrical connection The electrical connection for supply power and signal inputs/outputs is made in the terminal compart-
ment (Ex-e) of the signal converter. Observe requirements specified in VDE 165, and consult the safety advice given in Section 9.4. In the BM 70 A/P version with intrinsically safe signal output, only certified intrinsically safe equipment may be connected to the blue terminals, even if the device is not operated in the hazardous area!
Terminals:
PE safety conductor and/or FE functional ground:
Cablel entries:
Signal cable shielding:
conductor cross-section 0.5 - 2.5 mm (solid conductor: max. 4 mm) U-clamp terminal (max. 4 mm conductor cross-section)
(see also terminal assignments below and in Sect. 9.4) 3x M25x1.5 (with standard cable gland: cable clamping area = 9-16 mm) required for RS 485 line, recommended for current output when line lengths > 100 m (350 ft)
"Ex" equipotential bonding:
U-clamp terminal (max. 4 mm conductor cross-section) on "neck" of signal converter Rated temperature of power cables:
Version Max. flange temperature w/o high temperature distance piece with high temperature distance piece 100C/212F
> 100C/212F 200C/392F
> 200C/392F Rated temperature of power cables 70C/158F 80C/176F 70C/158F 80C/176F Terminal assignment Supply power:
L N 1 2 Inputs/Outputs Inputs/Outputs
L N PE
24V DC 24V AC
FE Connections for 115/230 V AC Connections for 24 V DC/AC (any polarity) Connection of an FE functional ground is not mandatory. Current output HART, Ex e:
Switching output max. 100mA/30V DCAC Digital input 82 81
5...28V=
Current output 42 41 32 31
4-20mA max.500
Ex-i current output HART:
Current output 32 31
U min.= 8V
4-20mA
Ex-i (IS) supply unit U max.= 30V
Installation and operating instructions BM 70 A/P Page: 33 11/00 Ex-i Current output HART with switching output:
Current output (non-communicable):
Switching output max. 110mA/30V 42 41 Current-
output 32 31
U min.
= 8V
4-20mA unassigned 4-20mA max.250 Current output 32 31
U max.= 30V Ex-i-supply unit
RS 485 version:
PROFIBUS-PA or Foundation Fieldbus (FF) B B A A Current output 32 31
4-20mA max.250 RS 485 input RS 485 output PROFIBUS-PA / FF with current output:
current output 42
U min.
= 8V 41- 32 31 32 31 Bus-
connection PROFIBUS-PA / FF with switching output:
switching output max. 110mA/30V 4-20mA
Ex-i-supply-
unit
U max.= 30V Bus-
connection 42 41 32 31 Bus-
connection 7.9 Terminating resistor for the RS 485 interface A selector plug on the RS 485 board allows optionally a high-resistance termination (presetting) or a terminating resistor of 120 at the RS 485 connections A and B. For this purpose, the housing
(flameproof enclosure) of the BM 70 A/P signal con-
verter needs to be opened (see Sect. 9.3) and the selector plug turned 180, see sketch on the right. RS485 signal-
output board high-
impedance 120
.... ... Installation and operating instructions BM 70 A/P Page: 34 11/00 8 User interface 8.1 Local display In the versions with local display at the BM 70 A/P signal converter, configuration can be carried out directly at the device. If a local display is not featured, the PC-CAT program (see Sect. 8.12) must be used to change the parameter setting (assuming a communicable interface is provided). Two variants of the display are available:
- Standard display with 2-line LCD display (7 mm high digits for the measured value).
Jumbo display with single-line LCD display and 16 mm high digits for the max. 5-digit measured value (restricted user friendliness for parameter setting, because 2nd line not visible). Standard display
Numerical display of measured value
Alphanumeric display of function/unit
6 markers to indicate measuring status
3 keys for configuration and error inquiry
magnetic sensors for control through the closed housing (function same as the 3 keys)
Compass field, signals actuation of a key Jumbo display
Numerical display of measured value (5 places)
6 markers to indicate measuring status
3 keys for configuration and error inquiry
magnetic sensors for control through the closed housing (function same as the 3 keys) Installation and operating instructions BM 70 A/P Page: 35 11/00 8.2 Function of the keys The three keys have the following functions:
(Cursor key):
(Select key):
(Enter key):
- selects the configuration menu,
- branches the menu to the next lower level,
- moves the cursor* to the right to the next column.
- branches the menu to the next digit in the same level,
- changes the content (digit, character) at the cursor* position.
- selects the error memory,
- branches the menu to the next higher level,
- stores newly entered parameters,
- executes displayed functions.
* The cursor position is signalled by flashing of the character or selected point at the appropriate place. To start operator control:
Measuring mode Operator control mode 6 2 7 c m F c t. 1.0 O P E R A T I O N Please note: When "YES" is set under Fct. 3.4.2 and ENTRY CODE "CodE1 -------"
appears in the display, the key must be pressed. The 9-keystroke Entry Code1 must then be entered:
Factory setting:
(each keystroke confirmed in the display by "*".) To terminate operator control:
Press key repeatedly until one of the following menus is displayed. Fct. 1.0 OPERATION, Fct. 2.0 TEST or Fct. 3.0 INSTALL. Press key ... F c t. 3. 0 I N S T A L L.
S T O R E Y E S New parameters not to be stored Press key to display "STORE.NO". Measuring mode continued with the "old"
parameters after pressing the key; the
"START" message is shown until a measured value is determined. If instead you wish to return to Configuration, press the key first until "RETURN" is displayed, and then the key. Store new parameters Confirm by pressing the key,
"START" is displayed, and the measuring mode is continued with the new parameters. Installation and operating instructions BM 70 A/P Page: 36 11/00 8.3 Operator control concept main menu column Submenu column Functions column Data column Measuring mode 6 2 7 c m CodE1
When this displayed, enter the 9-keystroke Entry Code1, see Fct. 3.4.3 Factory setting:
3.6 SW.OUTPUT.S 3.5 APPLICAT. 3.4 USER DATA 3.3 SIGNAL OUTP. 3.2 DISPLAY 3.1 BASIS.PARAM 2.4 FIRMWARE 2.3 SW.OUTP.S 2.2 CUR.OUTP.I 2.1 HARDWARE 3.6.1 - 3.6.4 3.5.1 - 3.5.9 3.4.1 - 3.4.4 3.3.1 - 3.3.7 3.2.1 - 3.2.5 3.1.1 - 3.1.8 2.4.1 - 2.4.2 2.3.1 2.2.1 - 2.2.2 2.1.1 - 2.1.3 3.0 INSTALL. 2.0 TEST l e v e l g n i t t e S 1.0 OPERATION 1.1 DISPLAY 1.1.1 - 1.1.3 Directions for using the keys in the menu levels and columns. The flashing part of the display (cursor) can be changed. Parameter check and return to measuring mode Selection of main menu with the key Selection of submenu with the key Selection of function with the key Setting the data with the keys Return to measuring mode
CodE2
Error QUIT
NO ERROR or Error display leaf through the error list by pressing or
QUIT NO
QUIT YES
Note:
If after pressing a key "NO ACCESS" is displayed, this means that the keypad is temporarily blocked owing to a configuration access via the signal output. The keys are available again after Communication has finished. Installation and operating instructions BM 70 A/P Page: 37 11/00 Examples of key functions The cursor (flashing part of display) is shown boxed in by dotted lines in the following description. To change numbers Increase value 6 2 7 c m To shift cursor (flashing position) Shift to right 6 3 7 c m To change the text Select next text L E V E L To change the unit (tank height) Numerical values are converted automatically 6 3 7 c m Select next unit To revert from unit to number setting Change to number setting 6 3 7 0 m m To revert to function display 6 3 7 0 m m
6 3 7 c m 6 3 7 c m D I S T A N C E 6 3 7 0 m m 6 3 7 0 m m 3.1.1. T A N K H E I G H T Installation and operating instructions BM 70 A/P Page: 38 11/00 8.4 Table of settable functions (Versions 3.00, 3.01, 3.02, 3.03, 4.02, 4.03) Function (Fct.) Default value Description Enter range LEVEL Meter [m]
Select function of display
(value to be displayed). Select unit for value of length to be displayed
(level/distance). Cubic meter [m3]
Select unit for conversion value to be displayed
("volume table"). Tests the hardware of the master. Tests the hardware of the display. Displays ID-Number and Status Bytes 2 mA Displays the actual value of the current output. Output of selected value to the current output. IMPORTANT !!! With safety inquiry because of direct access to the current output !!!
(Exi = min. 3.6 mA) LEVEL DISTANCE CONVERSION REFLECTION m cm mm inch Ft PERCENT BARGRAPH m3 l US Gal GB Gal Ft3 bbl PERCENT BARGRAPH USER UNIT Module DIS Module MW 2 mA 4 mA 6 mA 8 mA 10 mA 12 mA 14 mA 16 mA 18 mA 20 mA 22 mA OPEN CLOSED OPEN Switching output on/off. 1.0 OPERATION 1.1 DISPLAY 1.1.1 FCT.DISP Options 1.1.2 UNIT.LENGTH Options 1.1.3 UNIT. CONV. Options TEST 2.0 2.1 HARDWARE 2.1.1 MASTER 2.1.2 DISPLAY 2.1.3 STATUS 2.2 CUR.OUTP.I 2.2.1 VALUE I 2.2.2 TEST I Special function Special function Options Value display Options 2.3 SW.OUTPUT 2.3.1 TEST S Options FIRMWARE 2.4 2.4.1 MASTER 2.4.2 DISPLAY 3.0 INSTALL. 3.1 BASIS.PARAM 3.1.1 TANKHEIGHT Display Display Options, unit m m cm mm inch Ft 3.1.2 BLOCKDIST Enter Enter 0.50 [m] ... max. tank height 0.10 [m] ... tank height 10.00 m* / 20.00 m *
0.50 m *
3.1.3 ANTENNA Options 3.1.4 ANT.EXTENS. Enter 3.1.5 DIST.PIECE Enter STANDARD WAVE STICK STANDARD *
0.00 [m] ... Tank height 0 ... 2000 [mm]
0.00 m *
0 mm *
IMPORTANT !!! With safety inquiry because of direct access to the switching output !!!
Displays the firmware version of the master. Displays the firmware version of the display. To input the tank height. The tank height is defined as the vertical distance between the bottom edge of the flange and the tank bottom. The unit entered here is also used for all other length inputs. To input the block distance. The block distance marks the non-measurable range below the bottom edge of the flange. Selection of the antenna type.
(WAVE STICK only for BM 70 A) To input the length of the antenna extension. To input the length of the flange distance piece in [mm]
(high-temperature version = 120 mm). Installation and operating instructions BM 70 A/P Page: 39 11/00 Function (Fct.) Enter range Default value Description 3.1.6 STILLWELL Options NO YES NO Select: with or without stilling well. If "YES":
Enter (restraint) 3.1.7 REF.OFFSET Enter 3.1.8 TB. OFFSET Enter 3.2 DISPLAY 3.2.1 FCT.DISP. Options 3.2.2 UNIT.LENGTH Options 3.2.3 UNIT.CONV. Options STILLWELL DIA. 25 ... 200 [mm]
-10.00 ... + 10.00 [m]
-100.00 ... + 100.00 [m]
LEVEL DISTANCE CONVERSION REFLECTION m cm mm inch Ft PERCENT BARGRAPH m3 l US Gal GB Gal Ft3 bbl PERCENT BARGRAPH USER UNIT 100 mm 0.00 m 0.00 m LEVEL When "YES" selected, the inside diameter of the stilling well is additionally entered in [mm]. To input the reference offset
(relocation of the upper reference point). To input the tank bottom offset
(relocation of the lower reference point). Select function of the display
(value to be displayed). Meter [m]
Select unit for length value to be displayed
(level/distance). The unit selected here is used only for display of length values. Cubic meter [m3]
Select unit for conversion values to be displayed
("volume table"). The unit selected here is used only for display of the conversion value. 3.2.4 USER UNIT Text entry __________ 3.2.5 ERROR MSG. Options 3.3 SIGNAL.OUTP. 3.3.1 FUNCTION I Options 3.3.2 RANGE I Options 3.3.3 SCALE 4 mA Enter 3.3.4 SCALE 20 mA Enter 3.3.5 BAUDRATE Options 3.3.6 ADDRESS Enter 3.3.7 PROTOCOL Options YES LEVEL 10 ASCII characters NO YES OFF LEVEL DISTANCE CONVERSION REFLECTION SW.OUTP. 4-20 mA/E22 4-20 mA/E2 4-20 mA
-200.00 ... +200.00 [m]
0.00 ... 99999.99 [m3]
0 ... 100 [Refl.]
0.00 m 0.00 m3 0
-200.00 ... +200.00 [m]
0.00 ... 99999.99 [m3]
0 ... 100 [Refl.]
10.00 m *
10.00 m3 100 19200 Bd. *
1200 Bd. 2400 Bd. 4800 Bd. 9600 Bd. 19200 Bd. 38400 Bd. 0 ... 255 HART KROHNE/PC
(MODBUS)
(PROFIBUS-PA)
(F.FOUND.) 4-20 mA/E22 Select the range for the current output and error output. Input of freely programmable unit for the conversion table (max. 10 characters). Select whether error messages are to be shown in the display. Select function of the current output
(measured value to be displayed, or OFF = current output switched off = constant 4 mA). Input the lower range value for output to the current output.
(Input is dependent on the selected function of the current output. The values for level and distance include the tank bottom and reference offset, resp.). Input of the full-scale range for output to the current output.
(Input is dependent on the selected function of the current output. The values for level and distance include the tank bottom and reference offset, resp.). Select the baud rate for the Communication interface
(not relevant to HART via current output).
(For Fct. 3.3.7 = PROFIBUS-PA or F.FOUND.:
deviating options.) 0 HART Input of the device address for Communication.
(For Fct. 3.3.7 = PROFIBUS-PA or F.FOUND.:
deviating input range) Select the Communications protocol.
(only when appropriate hardware provided) Installation and operating instructions BM 70 A/P Page: 40 11/00 Function (Fct.) Enter range Default value Description 3.4 USER DATA 3.4.1 LANGUAGE Options 3.4.2 ENTRY CODE 1 Options 3.4.3 CODE 1 3.4.4 LOCATION Enter code Text 3.5 APPLICAT. 3.5.1 AUTO TANKH. 3.5.2 EMPTY.SPEC. Special function Options 3.5.3 TIMECONST. Value 3.5.4 TRACING.VEL. 1 ... 100 [s] (BM 70 A) 10 ... 100 [s] (BM 70 P) Value 0.01 ... 10.00 [m/Min] (BM 70 A) 0.01 ... 1.00 [m/Min] (BM 70 P) 3.5.5 MULT.REFL. Options 3.5.6 BD-DETECT. Options 3.5.7 FUNCT. FTB Options 3.5.8 EPSILON R Enter 3.5.9 TANKTYPE Options 3.6 SW.OUTP.S. 3.6.1 FUNCTION S Options 3.6.2 TYPE S Option 3.6.3 THRESHOLD Value 3.6.4 HYSTERESIS Value NO YES NO YES OFF PARTIAL FULL 1.1000 ... 8.0000 STORAGE TANK PROC.TANK. AGITATOR OFF LEVEL DISTANCE CONVERSION REFLECTION ERROR OPEN ERROR CLOSED HIGH LOW
-200.00 ... +200.00 [m]
0.00 ... 99999.99 [m3]
0 ... 100 [Refl.]
0.00 [m] ... Tank height 0.00 ... 99999.99 [m3]
0 ... 100 [Refl.]
GB/USA, D, F, I, E, P, S GB/USA *
NO YES NO RRREEEUUU BM70A-00 BM70P-00 Select language to be used in the display
(English, German, French, Italian, Spanish, Portu-
guese, Swedish) Switch the access lockout for the configuration menu on/off. Input of the Entry Code. Input of a max. 8-character device identifier. OFF *
OFF ON RECORD Automatic determination of the tank height. Switch the empty-tank spectrum (profile of the empty tank) on/off, or make new recording. Input of the time constant for measured-value filtering
(low-pass). Input of the maximum rate of change in the level that can occur in operation. Switch the multi-reflection identifier on/off. Switch the block distance (overfill) detector on/off. Select function of the tank bottom tracking system.
(FULL for BM 70 A only) Input of the relative permittivity of the product for the tank bottom tracking system. Select the tank type.
(AGITATOR for BM 70 A only) 10 s (BM 70 A) 30 s (BM 70 P) 0.50 m/min
(BM 70 A) 0.10 m/min
(BM 70 P) NO YES OFF 2.0000 PROC.TANK. ERROR OPEN Select the function of the switching output. HIGH 5.00 m 5.00 m3 50 0.10 m 0.10 m3 10 Select type of limit value for the switching output.
(not applicable to Function OFF, ERROR OPEN or ERROR CLOSED) Input of the threshold value for the switching output.
(Input is dependent on the function of the switching output. The values for level and distance include the tank bottom and reference offset, resp.) Input of the hysteresis for the switching output.
(Input is dependent on the function of the switching output.)
Default values following a parameter reset (use of a new EEPROM not yet described). The factory setting for the parameters marked with * is dependent upon the device version and customer specifications (if the tank height is known at the time the order is placed). Installation and operating instructions BM 70 A/P Page: 41 11/00 8.5 Configuration examples Fct. 3.1.5 upper reference point
(top edge of tank connecting flange) Fct. 3.1.4 block distance (Fct. 3.1.2) response threshold Imax
(Fct. 3.3.4) 20 mA
measuring range current output 4 mA Imin
(Fct. 3.3.3) Sump lower reference point
(tank bottom / datum point) tank height
(Fct. 3.1.1) non-
measurable zone 8.5.1 Level measurement (example) Tank height (Fct. 3.1.1):
Antenna extension (Fct. 3.1.4):
Block distance (Fct. 3.1.2):
Response threshold or maximum measurable level = 5.30 m (calculated from lower reference point) 6.00 m 0.20 m 0.70 m
= tank height - block distance
(Fct. 3.1.1) (Fct. 3.1.2)
= 6.00 m - 0.70 m Current output I Switching output Display Please note Function I (Fct 3.3.1):
Range I (Fct. 3.3.2):
Scaling 4 mA (Fct. 3.3.3):
Scaling 20 mA (Fct. 3.3.4):
Function S (Fct. 3.6.1):
Type S (Fct. 3.6.2):
Threshold (Fct. 3.6.3):
Hysteresis (Fct. 3.6.4) LEVEL 4 - 20 mA 0.00 m, equivalent to 4 mA 5.00 m, equivalent to 20 mA LEVEL LOW (= below threshold) 5.00 m 0.10 m Function, display (Fct. 3.2.1):
Unit, length (Fct. 3.2.2):
LEVEL m (meters) Display and outputs can also be used for different measured variables, e.g.: display for conversion, current output I for level, and switching output S for error messages. The value for Scaling 20 mA should not be greater than the response threshold. Installation and operating instructions BM 70 A/P Page: 42 11/00 8.5.2 Volume measurement (example) In order to be able to measure volume with the BM 70 A/P, a conversion table (volume table) needs to be compiled with the PC-
CAT program (see Sect. 8.12). By means of the volume table, various levels are allocated to specific volumes previously calculated or measured out. In the case of non-sy mmetrical tanks, e.g. tanks with dished bottom, the accuracy of volume measurement will depend on the number of set "level/volume pairs". The maximum number of pairs (points) that can be set linearly determined (interpolated) between 2 points. In the following example, 4 data pairs have been progra mmed. the volume is 50;
is Volume table Unit volume (Fct. 3.2.3): m3 Set table (PC-CAT):
Point
Level 0.00 m 0.25 m 0.50 m 5.30 m Volume 0.25 m 0.70 m 1.40 m 16.80 m Tank height (Fct. 3.1.1):
Antenna extension (Fct. 3.1.6):
Block distance (Fct. 3.1.2):
Response threshold, maximum measurable level = 5.30 m, equivalent to a volume of 16.80 m
(calculated from lower reference point) 6.00 m 0.20 m 0,70 m
= tank height - block distance
(Fct. 3.1.1) (Fct. 3.1.2) Current output I Switching output
= 6,00 m - 0,70 m Function I (Fct 3.3.1):
Range I (Fct. 3.3.2):
Scaling 4 mA (Fct. 3.3.3):
Scaling 20 mA (Fct. 3.3.4):
Function S (Fct. 3.6.1):
Type S (Fct. 3.6.2):
Threshold(Fct. 3.6.3):
Hysteresis (Fct. 3.6.4) CONVERSION 4 - 20 mA 0.00 m3 , corresponds to 4 mA 16.80 m3 , corresponds to 20 mA LEVEL LOW (=if level drops below threshold) 5.00 m 0.10 m Display Function, display (Fct. 3.2.1):
Unit, conversion (Fct. 3.2.2):
CONVERSION m3 (cubic meter) Installation and operating instructions BM 70 A/P Page: 43 11/00 Reflection units The measuring range for "reflection" has a fixed setting of 0...100 (whole numbers). The "reflection" measured value is a relative measure of the strength of the reflected signal, converted into an exponential scale: each number step is approximately equivalent to a change by 0.4 dB; in other words, about 8 steps signify a doubling of the signal strength. At full reflection, a value of approx. 90...100 is measured. Where measuring distances are greater, the natural weakening of the signal is automatically allowed for in the measured value (does not apply to stilling wells, i.e. when Fct. 3.1.6 = YES). The measured reflection can be regarded as being a measure of the reflectivity of a product. 8.6 Description of functions 8.6.1 Choice of units Level/distance units Select under Fct. 3.1.1 TANKHEIGHT m
cm
Ft inch
mm The unit selected here is also valid for the following functions:
- Block distance Fct. 3.1.2
- Antenna extension, Fct. 3.1.4
- Scaling 4 mA value, current output, Fct. 3.3.3
- Scaling 20 mA value, current output, Fct. 3.3.4
- Range for partial tank bottom tracing, Fct. 3.5.2
- Threshold (limit value), switching output, Fct. 3.6.3
- Hysteresis, switching output, Fct. 3.6.4
- Tracking speed, Fct. 3.5.4
(in m/min when Fct.3.1.1 = m, cm or mm or in ft/min when Fct.3.1.1 = inch or ft) The Fct. 3.2.2 (length unit for display) can be set independently of the unit selected under Fct. 3.1.1. Conversion units By conversion is meant the transposition of an arbitrary level value into a "conversion value" (usually volume), so as, for example, to realize a non-linear function as a factor of the level. Options under Fct. 3.2.3 UNIT.CONV. m US Gal Ft3
l ( = litres)
GB Gal (Gal = gallons)
bbl (petroleum barrels) The unit selected here is also valid for the following functions:
- Scaling 4 mA value, current output, Fct. 3.3.3
- Scaling 20 mA value, current output, Fct. 3.3.4
- Threshold (limit value), switching output, Fct. 3.6.3
- Hysteresis, switching output, Fct. 3.6.4 Display range:
0.00 - 30000.00 m3 0 - 9999999 Liter 0 - 7925161 US Gal 0 - 6599265 GB Gal 0.0 - 999999.9 Ft3 0.0 - 99999.9 bbl (petroleum barrel) Note: When the display is set to Liter, ft or Barrel, it is possible that the max. volume will no longer be shown. In such cases, the special symbol " == " is displayed and a change possibly made to a different unit. The current output will in any case output the correct value. Conversion measurement requires that a conversion table be set with the PC-CAT program. By means of this table a conversion value is allocated to each level value (level /
conversion pairs). The values are linearly established
(interpolated) between 2 points. Also, for the local display an arbitrary (max. 10-character) text (Fct. 3.2.4) can be defined as a unit under Fct. 3.2.4. Internally, this "user unit" is treated in the conversion in the same way as " m ". Examples of application and setting: see Sect. 8.5 Installation and operating instructions BM 70 A/P Page: 44 11/00 datum plane for distance 8.6.3 Block distance, antenna type and antenna extension O-Ref (+) Bottom edge of flange Level tank bottom O-TB (+) DS AV BD H Product surface distance H BD AV DS O-Ref O-TB
- tank height
- block distance
- Antenna extension
- distance piece
- reference offset
- tank bottom offset datum plane for level Fct. 3.1.1 [0.00 m ... max. tank height]
Fct. 3.1.2 [0.10 m ... Tank height]
Fct. 3.1.4 [0.00 m ... Tank height]
Fct. 3.1.5 [0 ... 2000 mm]
Fct. 3.1.7 [ -10.00 ... + 10.00 m]
Fct. 3.1.8 [ -100.00 ... + 100.00 m]
8.6.2 Vessel (tank) height Fct. 3.1.1 TANKHEIGHT Definition of the tank height for the BM 70 A/P:
Distance between the top edge of the tank fitting and the lower reference point. The lower reference point is that "point" in the vessel on which the microwaves emitted by the BM 70 A/P impinge and from which they are reflected. This can be the tank bottom (sy mmetrical tank with flat bottom) or the non-horizontal part of the bottom (e.g. tank with dished bottom) or an additionally fitted plate. The BM 70 A/P cannot measure below the lower reference point (usually a "sump" is left in the tank, see diagram in Sect. 8.5). Selection of unit, see Sect. 8.6.1. Setting ranges for the tank height BM 70 A (standard):
00.50 - 40.00 m 0050 - 4000 cm 00500 - 40000 mm 0019.7 - 1574.74 inch 001.64 - 131.22 ft For BM 70 P: max. 35m / 1377.9 inch / 114.8 ft Depending on the version, it is also possible to set an upper limit for the tank height (e.g. Wave-Stick: 20 m). The maximum value can be increased by KROHNE Service to up to 100 m. (For BM 70 A only) The tank height set at this point is simultaneously the upper limit of the setting ranges for the following functions:
- Block distance, Fct. 3.1.2
- Antenna extension, Fct. 3.1.4
- Hysteresis, switching output, Fct. 3.6.4 If the tank height is changed to a value greater than 30 m, a new empty spectrum must subsequently be recorded, see Sect. 8.6.12. (not applicable to BM 70P). Fct. 3.1.2 BLOCKDIST Caked deposits or contamination of the antenna, for example, can cause faulty measurements directly below the antenna. The function "block distance" is used to specify a zone below the flange in which measurements are not to be carried out. Signals within the block distance are suppressed; a rise in the level above this limit will result in a measurement corresponding to a distance = block distance, when Fct. 3.5.6 BD-DETECT = ON. Unit and setting range: same as Fct. 3.1.1 Recommended minimum value (see also Sect. 3.3):
TANKHEIGHT.
- for "Wave-Stick": 200 mm
- for stilling wells and "Wave-Stick SW":
antenna length + 300 mm
- all other versions in storage tanks:
antenna extension + antenna length + 100 mm
- all other versions in process tanks:
antenna extension + antenna length + 200 mm Fct. 3.1.3 ANTENNA The antenna type is factory-set here. STANDARD (all versions incl. "Wave-Stick SW" but WAVESTICK (not for "Wave-Stick SW") BM 70 P: only STANDARD setting possible. excl. "Wave-Stick") Fct. 3.1.4 ANT.EXTENS. The length of the supplied antenna extension is factory-set here. Unit and setting range: same as Fct. 3.1.1 TANKHEIGHT. This setting may only be changed when a longer or shorter antenna extension is installed. Otherwise faulty measure-
ments may result because the BM 70 A/P allows for this length when measuring. After changing any antenna extension, record a new empty spectrum, see Sect. 8.6.12. When a curved antenna extension is used, only the vertical component (vertical offset) should be entered here. Example (S-shaped extension): Fct. 3.1.4 = 323 mm. 323 mm
(Fct. 3.1.4) 300 mm
(Fct. 3.1.5) 8.6.4 Distance piece Fct. 3.1.5 DIST.PIECE The length of any supplied distance piece above the mounting flange is factory-set here. Setting range: 0 ... 2000 mm Default value: 0 mm The value of 120 mm should be entered for the high-
temperature version of the flange system. When a curved antenna extension is used, the horizontal component of this extension should additionally be entered
(= geometric length of the pipe minus the vertical offset). Example (see drawing above): Fct. 3.1.5 = 300 mm. Installation and operating instructions BM 70 A/P Page: 45 11/00 8.6.5 Stilling well Fct. 3.1.6 STILLWELL If the device is operated with a stilling well, the option Stilling well = YES and the inside diameter of the pipe should be entered here in mm. NO YES : operation with stilling well
: operation without stilling well If YES has been selected, proceed with and enter the inside diameter:
Setting range: 25 ... 200 mm Default value: 100 mm If the diameter of the stilling well is greater than 200 mm, enter the maximum value = 200 mm. 8.6.6 Reference and tank bottom offsets Fct 3.1.7 REF. OFFSET An arbitrary reference offset is added to the measured distance (positive when the reference point is above the flange; negative when the reference point is below the flange): see Example 1 below. The offset is effective for all distance values (local display, current output, switching output, digital information). Setting range: -10 m ... +10 m (32.8 ft) Default value: 0 Fct 3.1.8 TB.OFFSET An arbitrary tank bottom offset is added to the measured level (positive, when the reference point is below the set tank height; negative, when the reference point is above the tank bottom): see Examples 2 and 3. The offset acts on all level values (local display, current output, switching output, conversion table, digital information). Setting range: -99.99 m ... +99.99 m (328 ft) Default value: 0 Examples of setting the reference offset and tank bottom offset:
Example 2: Reference point for level measurement differs from the progra mmed tank bottom position (in the example, 2 m below the tank bottom). Let the tank height be H = 6 m. BM 70 Reference point Block-
distance 8m Level H = 6m Tank bottom TBO = 2m Reference plane for level measurement Input the following parameters:
Tank height = 6 m Tank bottom offset = + 2 m Reference offset = 0 The possible measuring range is:
Level = 2 m to (8 m - block distance). Example 3: Only a specific part of the level in a very tall tank is to be measured (in the example, levels 50m ... 60m). Block distance Level BM 70 Reference point 10m programmed tank bottom Example 1: Reference point for distance measurement
(ullage) differs from flange position (in the example, 1 m above the flange). Let the tank height be H = 6 m. 60m Reference plane for distance measuring RO = 1m Block-
distance
"Ullage"
7m BM 70 Reference point H = 6m Input the following parameters:
Tank height = 6 m Reference offset = + 1 m Tank bottom offset = 0 The possible measuring range is:
Distance = (1 m + block distance) to 7 m. TBO =
50m Reference plane for level measurement Input the following parameters:
Tank height = 10 m Tank bottom offset = + 50 m Reference offset = 0 The possible measuring range is:
Level = 50 m to (60 m - block distance). Installation and operating instructions BM 70 A/P Page: 46 11/00 8.6.7 Display function is used the measured Fct. 3.2.1 (or Fct. 1.1.1) FCT.DISP. This to select variable. LEVEL DISTANCE CONVERSION REFLECTION If the conversion value is to be displayed, a conver-
sion table must be progra mmed first otherwise a parameter error will occur.
} Measuring range, see Figure in Sect. 8.5. inch
cm mm
Ft
BARGRAPH Fct. 3.2.2 (or Fct. 1.1.2) UNIT.LENGTH Use this function to select the unit for displaying level and distance. m PERCENT The "percent display" refers to the scaling range of current output I. Therefore the current output must also be set to level or distance, otherwise a parameter error will occur. Under "Bargraph", a maximum of 25 segments are displayed in the form of vertical lines in the first line of the display (0% = 1 segment, 100% = 25 segments). ft3
litres
GB Gal (Gal = gallons)
bbl (petroleum barrels)
BARGRAPH Fct. 3.2.3 (or Fct. 1.1.3) UNIT.CONV. Use this function to select the unit for conversion display. m3 US Gal PERCENT User Unit (see Fct. 3.2.4) The "percent display" refers to the scaling range of current output I. Therefore the current output must also be set to conversion, otherwise a parameter error will occur. Under "Bargraph" in the first line of the display a maximum of 25 segments as vertical lines are displayed
(0% = 1 segment, 100% = 25 segments). Fct. 3.2.4 USER UNIT Enter the text for the conversion "user unit" (see Fct. 3.2.3) here. It consists of a maximum of 10 alphanumeric characters. Characters assignable to each of the 10 places:
alpha characters A-Z / a-z numbers 0-9 or special signs + -
blank characters (= underscore) Fct. 3.2.5 ERROR MSG. Use this function to select whether errors are to be displayed during measurement. NO Error messages shown only in the error list, see Sect. 8.8 YES When errors occur during measurement,display of the measured value will alternate with error messages. 8.6.8 Current output I Fct. 3.3.1. FUNCTION I Use this function to select the measured variable. OFF (= deactivated, the output supplies a constant 4 mA, e.g. necessary for HART Multidrop; Fct. 3.3.2 to 3.3.4 cannot then be selected, i.e. they are skipped over). LEVEL DISTANCE CONVERSION REFLECTION SW.OUTP. (function and switching threshold are set in Fct. 3.6). Fct. 3.3.2 RANGE I Use this function to define the current in error condition. E = Error at 2 mA or 22 mA. 4-20 mA (hold last measured value when error occurs) 4-20 mA/E=2 (min. 3.6 mA for Ex-i output!) 4-20 mA/E=22
"OFF" is set under Fct. 3.3.1. Fct. 3.3.3 SCALE 4 mA This function does not appear (is skipped over) when This function is used for Imin = 4 mA to define the lower value for level, distance, conversion or reflection
(scaling 4 mA). Setting LEVEL or DISTANCE under Fct. 3.3.1:
Setting range and unit for SCALE 4 mA same as for Fct. 3.1.1 TANKHEIGHT. If a reference or tank bottom offset is set, this must be allowed for!
Setting CONVERSION under Fct. 3.3.1:
for SCALE 4 mA same as Unit in Fct. 3.2.3 UNIT.CONV. But value must be smaller than the maxi-
mum value in the conversion table. Setting REFLECTION under Fct. 3.3.1:
The setting range for SCALE 4 mA is 0...99. Fct. 3.3.4 SCALE 20 mA This function does not appear (is skipped over) when This function is used fr I max = 20 mA to define the upper value for level, distance, conversion or reflection
"OFF" is set under Fct. 3.3.1.
(scaling 20 mA) Setting LEVEL or DISTANCE under Fct. 3.3.1:
Setting range and unit for SCALE 20 mA as for Fct. 3.3.1 TANKHEIGHT. The value set here should not be greater
(Response threshold = tank height (Fct. 3.1.1) - block distance
(Fct. 3.1.2)). If a reference or a tank bottom offset is set, this must be allowed for!
threshold. response than the Setting under CONVERSION 3.3.1:
Unit for SCALE 20 mA same as in Fct. 3.2.3 UNIT.CONV. The value set here must be greater than that of Fct. 3.3.3, otherwise error during Parameter Check. Fct. Setting REFLECTION under Fct. 3.3.1:
The setting range for I max = 20 mA is 1...100. The value set here must be greater than that of Fct. 3.3.3, otherwise error during Parameter Check. Application and setting examples: see Sect. 8.5 Installation and operating instructions BM 70 A/P Page: 47 11/00 8.6.9 Communication interfaces Fct. 3.3.5 BAUDRATE This function defines the transmission rate for RS 485 Communication. 1200 Bd. 9600 Bd. 2400 Bd. 19200 Bd. 4800 Bd. 38400 Bd. Default value = 19200 bauds For devices with PROFIBUS-PA (Ex-i) output the value has been set to 31250 bauds. and cannot be changed. The value set here for digital Communication via the current output (e.g. HART). For this, 1200 bauds are on principle processed, independent of the setting in Fct. 3.3.5!
relevant is not Fct. 3.3.6 ADDRESS This function is used for entering valid addresses from 0 to 255 (PROFIBUS: 0 to 126). If several devices are operated on one digital bus or via HART-Multidrop, each device must be set to an individual address under which then be addressed in the bus. it can The default value is the address "0". PROFIBUS-PA:
(special signal output required) The PROFIBUS-PA is defined and standardized in DIN 19245, Parts 1 and 2. A large number of devices with PROFIBUS-PA capability are available on the market. The BM 70 A/P is easy to connect to such bus systems; it has a purely slave function and allows access to all dynamic values and to setting parameters. The hardware interface we use is the intrinsically safe bus interface. For further information, please ask for the "BM70A/P PROFIBUS-PA" description. F.FOUND.:
(special signal output required) Bus interface in conformity with the "Foundation Fieldbus"
(FF). For further information, please ask for the "BM70A/P Foundation Fieldbus " description.
- in preparation -
Fct. 3.3.7 PROTOCOL The following Communications protocols are available:
HART:
The HART protocol is a Communications protocol of the
"HART Communication Foundation". In addition to the
"universal commands" and "common practice commands"
there are "device-specific commands" for access to all parameters and functions of the BM 70 A/P. In addition there is the "device description" (DD) for BM 70 A/P, which can be used for universal HART control units, such as the HART Communicator or SIPROM. The standard hardware platform for HART is the current output 4-20 mA with superimposed FSK signals. For HART-Multidrop (max. 15 devices on one bus), the version with Ex-i current output, set to a constant 4 mA
(Fct. 3.3.1 = OFF) should be selected. KROHNE/PC (KROHNE protocol):
The standard Communications protocol between the BM 70 A/P and the evaluation system is the standardized KROHNE protocol, which allows all dynamic values and setting parameters to be read and changed. If the BM 70 A/P is connected to existing user systems, this protocol must be applied to such systems. The protocol can also be used when the BM 70 A/P is connected to the KROHNE Tank Inventory System. For further information, please ask for the "BM70A/P PC Communication" description. MODBUS:
(not yet included in V. 3.00/3.01/4.00) The Modbus protocol constitutes a quasi-standard for linking to progra mmable logic controls (PLC) and other systems. The BM 70 A/P uses the Modbus RTU Protocol with extended facilities to permit access to all dynamic values and setting parameters. For further information, please ask for the "BM70A/P Modbus" description. Installation and operating instructions BM 70 A/P Page: 48 11/00 8.6.10 Display Language of display texts A choice of languages for the display texts is offered in Fct. 3.4.1. GB/USA English D German F French I Italian Spanish (Espaol) Portuguese Swedish
E
P
S If the message: NO MEAS.VAL. appears, this means that the quality of measurement is not adequate (inadequate bottom reflection or too many interferences) for automatic determination of the tank height. Press key to abort the operation. In this case you will need to enter the tank height manually with Fct. 3.1.1. Coding desired for entry into setting level?
Set NO or YES in Fct. 3.4.2 ENTRY.CODE1. If NO set, simply press key to get into the setting level. If YES set, press key and then a 9-keystroke combi-
nation to get into the setting level. Factory-set Entry Code 1:
To change Entry Code 1 _ Select Fct. 3.4.2 ENTRY CODE 1: set to YES. Select Fct. 3.4.3 CODE 1. Press key , display shows: CODE 1 _ _ _ _ _ _ _ _ Key-in required 9-keystroke combination; each key-
the same stroke confirmed by "*". Then press keystroke combination again.
"WRONG CODE"
(= incorrect entry) appears if 1st and 2nd entries are not equal. Press keys and and repeat entries. Take good note of the selected entry code!
Measuring-point identification (tag name) A max. 8-figure tag name can be set under Fct. 3.4.4 LOCATION (e.g. L123 A53) Characters assignable to each of the 8 places:
alpha characters A-Z / a-z; numbers 0-9;
special signs: + - ; blanks (= underscore character) Factory setting: BM70A-00 or BM70P-00 8.6.11 Auto tank height FCT. 3.5.1 AUTO TANKH. With this function the height of the tank can be determined by the BM 70 A/P itself, provided the following conditions are met:
The tank has been completely drained for at least 2 minutes. The The tank bottom has good reflectivity (not suitable for dished and tapered bottoms without reference plate). functions Fct. 3.1.3
(antenna), Fct. 3.1.4
(extension), Fct. 3.1.5 (distance piece) and Fct. 3.1.6
(stilling well) must previously have been correctly set. If the tank is taller than 30 m, the approximate tank height must previously be set manually with Fct. 3.1.1, as otherwise the measuring range will not suffice to locate the bottom. After pressing the key the display shows the currently measured value for the tank height. Press key ; the inquiry "SURE NO" now appears. If you are not sure whether the measured value coincides with the true tank height, reject the value by pressing key . If the measured value seems plausible for the tank height and you wish to store it, change the option to "SURE YES"
by pressing key , and then press key . Installation and operating instructions BM 70 A/P Page: 49 11/00 8.6.12 Empty spectrum What is an empty spectrum ?
Fixed and moving internals in the tank (including perhaps the tank wall) produce interference signals
(reflections) that can result in incorrect measurements. To enable the BM 70 A/P to identify and blank out such interference signals, the tank profile (empty spectrum) needs to be recorded once only prior to (initial) startup. For this purpose, the tank should if possible be completely empty and all moving parts (e.g. agitators) switched on. If these conditions cannot be met during startup, the tank profile (empty spectrum) can also be recorded at a later time. Until it is recorded, however, measurements may be inaccurate. the Recording of tank profile involves 1000 measurements that are carried out by the BM 70 A/P and stored in the form of a so-called "empty spectrum". This allows the BM 70 A/P to discriminate between constant or regularly recurring interference signals and the actually useful or wanted signals (level). Inter-
ference signals are suppressed and only the useful signal is processed. If no appreciable interference from internals is to be expected, recording of the empty spectrum can also be omitted, because a partial empty spectrum (see below) of the flange system has been stored by the factory. Recording of the empty spectrum (sequence, example) Key Displayed Description 2 x 4 x 1.0 3.0 3.1 3.5 3.5.2 OPERATION INSTALL. BASIS.PARAM. APPLICAT. EMPTY.SPEC. ON RECORD AVERAGE MAX. VALUES TOTAL PARTIAL 40000 mm WAIT 1000...0 3.5.2 READY EMPTY.SPECT. 4 x If "9 underscores" now shown, key in the 9-keystroke Entry Code 1. Partial empty spectrum already recorded by factory Factory-set is here AVERAGE
(= normal empty spectrum). This setting is suitable for most applications (possible alternative) Recording of the empty spectrum over the full range. If the tank cannot be drained over the full range Enter distance value down to which the empty spectrum is to be recorded. Empty spectrum being recorded. Duration: approx. 1.5 minutes. Countdown is from "1000" to
"0". After 1.5 minutes. Tank profile recorded. Revert to measuring mode with display of actual level, distance or conversion. Empty spectrum is now stored and will be taken into consideration for measurements. Installation and operating instructions BM 70 A/P Page: 50 11/00 FCT. 3.5.2 EMPTY.SPEC. Under this function the empty spectrum is activated or deactivated, or recorded and stored. The display first gives information as to whether the empty spectrum is currently switched ON or OFF. You can then choose between:
OFF: The empty spectrum is not considered for measurements but remains stored in the BM 70 A/P and can be activated again at a later date. ON: The empty spectrum is (again) activated and considered for measurements. RECORD: The previous empty spectrum is to be deleted and a new one recorded. Conditions:
- Tank must be totally or partially drained.
- All moving parts, e.g. agitators, must be switched on.
- Tank height, antenna extension, distance piece and still well must be set correctly. Note: where a Wave-Stick is involved Due to an error in Firmware Version 3.00, before the empty spectrum can be re-recorded, parameter 3.1.3 ANTENNA (see Section 8.6.3) must first be set to STANDARD and then set to WAVE-STICK after the empty spectrum recording has been made. If these directions are not observed, the "SPECT.ERR" error will be indicated, and the recording will need to be carried out again (cor-
rectly). This error has been rectified in subsequent firm-
ware version (V. 3.01 and higher), and the empty tank spectrum can be recorded in the usual way for the Wave-
Stick. When you select "RECORD", the procedure is as follows:
If other configuration parameters have previously been changed, you will first be asked by "STORE YES" whether you wish to store the data. Confirm by pressing key . The next step is a choice of the following:
AVERAGE Values are averaged. This setting can be used for most applications. MAX. VALUES Only maximum values considered when the empty spectrum is recorded. Of advantage in conjunction with "difficult" agitators, for example. is the empty-tank spectrum If the tank is not completely drained, the empty tank spectrum can nevertheless still be recorded up to a certain range. In this case, select menu item PARTIAL. After selecting AVERAGE or maX. VALUES, press key
. Then select PARTIAL or TOTAL with key , as follows. If TOTAL selected, recorded over the complete range. If PARTIAL selected, interrogation is carried out via the key concerning input of the distance value up to which the empty-tank spectrum shall be recorded. The tank area below the current product level is excluded from the recording of the empty-tank spec-
trum. The distance value is entered in the same unit as used for the tank height, in the range of 0 m to tank height. It is recommended to maintain a safe distance of 20 to 30 cm (8" to 12") to the actual distance. Subsequently press key to start recording of the empty-
tank spectrum.
"WAIT" appears briefly in the display. Then countdown of measurements from "1000" to "0". "READY" is displayed after approx. 1.5 Minutes. Press key 5 times to store the empty spectrum, which will during measurements. Recording of the empty spectrum can be aborted by pressing key . Displayed: BREAK. Confirm by pressing key . The "old" empty spectrum is retained in this case. consideration taken then into be 8.6.13 Time constant and tracking speed Fct. 3.5.3 TIMECONST. New measured values are damped (filtered) with the time constant so as to avoid abrupt changes in measured values and thus also in the current output I and the display. Setting range: 001 - 100 Sec (BM 70 A) 010 - 100 Sec (BM 70 P) The tank bottom must supply a measurable reflection signal, so the method cannot be applied e.g. when a dished bottom is involved. Default value and recommended setting:
010 Sec (BM 70 A) 030 Sec (BM 70 P) the Fct. 3.5.4 TRACING.VEL. To avoid faulty measurements, the BM 70 A/P places a sy mmetrical "plausibility range" around last valid measured value in which the next measured value is expected. Measured values outside this range are identi-
fied as invalid and are suppressed. If no valid measured value is identified, the BM 70 A/P enlarges the plausibility range with the tracing speed (Fct. 3.5.4) until a valid (plausible) measured value has again been found. The measured value for level/distance cannot change at a faster rate than the set tracing speed. Under Fct. 3.5.4 the maximum rate at which the level can change in the tank should be set as the minimum value. Setting ranges:
BM 70 A 0.01 - 10.00 m/min (if Fct. 3.1.1. Unit m/ cm/ mm) 0.03 - 32.80 ft/min (if Fct. 3.1.1. Unit inch/ft) BM 70 P 0.01 - 1.00 m/min (if Fct. 3.1.1. Unit m/ cm/ mm) 0.03 - 3.28 ft/min (if Fct. 3.1.1. Unit inch/ft) Default: 0.5 m/min (BM 70 A); 0.1 m/min (BM 70 P) See also Sect. 8.8 (error message: NO M.VALUE) 8.6.14 Multiple reflections and block distance detection Fct. 3.5.5 MULT.REFL. Multiple reflections frequently occur in storage tanks with an extremely calm surface, typically when the BM 70 A/P is mounted on a dome or centred on a "dished cover", or the vessel is fitted with a flat or only very slightly convex head. Such multiple reflections tend to simulate lower-than-
actual the multiple reflections identifier, and see also references in Sect. 8.8. NO (default) In such cases, activate levels. Measurement without identification of multiple reflections. YES Measurement with identification of multiple reflections. A better solution, however, is to change the mounting location of the BM 70 A/P so as to prevent the occurrence of multiple reflections in the first place, or at least to diminish the strength of the multiple reflections (see Sect. 6.1.2). To ensure satisfactory identification of the first measured value after the BM 70 A/P has been switched on, always carry out measurements with the "empty spectrum" (Fct. 3.5.2) when the "multiple reflection identifier" is activated, see Sect. 8.6.12. Installation and operating instructions BM 70 A/P Page: 51 11/00 Fct. 3.5.7 FUNCT. FTB The tank bottom tracing system is activated under this function:
OFF The FTB is deactivated; the device operates in the standard mode. PARTIAL When this option has been selected, the tank bottom tracing system is activated only in the vicinity of the tank bottom, i.e. at low levels (max. 20% of the tank height but a minimum of 0.6 m). Given higher levels, the normal measuring method is used (reflection from the product surface). This method is sufficient for most applications with poorly reflecting products. The parameter EPSILON R (Fct. 3.5.8) must be as exact as possible. FULL ( for BM 70 A only) When this option is selected, the tank bottom tracing system is activated over the total measuring range
(tank height). For tank heights above 16 m, however, measuring accuracy is additionally affected. The parameter EPSILON R (Fct. 3.5.8) must be as exact as possible. Fct. 3.5.8 EPSILON R Use this function to enter the relative permittivity. Allowable input range: 1.1000 - 8.0000 Default: 2.0000 Enter the figure of 2.0000 if the relative permittivity is not known, as numerous products have a R value 2. However, expect reduced measuring accuracy and/or skipping of the measured value on changeover from tank bottom the normal measuring mode (=
evaluation of reflection from the product surface), see following diagram:
tracing to level example of a tank filling EPSILON R too low correct too high time Fct 3.5.6 BD-DETECT. NO YES (default) To activate the block distance (overfill) detector:
So long as a significant signal is detected within the block distance, the measured value is "held" at the block distance limit. This avoids any possibility of the measured value skipping to a multiple reflection should the level rise into the block distance range. The block distance can have a value that is at least equal to that specified in Sect. 8.6.3 as a recommendation!
marker 6 in the display indicates when the block distance detector is active. If the measured value skips (e.g. contamination of the antenna) erroneously to the block distance limit, the BD-DETECT should be deactivated. 8.6.15 Tank bottom tracing system Description The BM 70 A/P firmware includes an additional function for measuring in tanks with poorly reflecting
(i.e. relative permittivity 3) yet non-absorbing R products. This function is designated "tank bottom tracing" (abbreviated to FTB) and utilizes the apparent shift of the tank bottom signal resulting from different microwave propagation rates in the air and in the tank product. It is necessary that the tank bottom is reflecting. Therefore this method is not applicable e.g. in tanks with a conical bottom. This requires that the relative permittivity R of the tank product be as exact as possible. (This parameter can also be determined by a KROHNE Service technician from the recording of a tank filling or draining operation with the user program (see Sect. 8.12). The level in the tank should in this case change over the largest possible range.) When measurements are taken with activated FTB, an expectancy range for the measured value is deter-
mined on the basis of the shifted tank bottom signal, and inaccuracy of the R value of 10% is taken into consideration. If no evaluable measuring signal is obtained within this range, a substitute measured value is calculated direct from the tank bottom signal. This feature of the FTB even allows measurement in tanks without a direct useful signal, provided the tank bottom remains visible the product. the microwaves through for Since the exact position of the tank bottom must be known for this process, it is advisable when using the FTB to determine the tank height automatically with a completely empty tank, using Fct. 3.5.1, see Sect. 8.6.11. It needs to be borne in mind that, when measuring with the substitute measured value determined by way of the tank bottom signal, measuring accuracy will decrease by the factor (
R of 2.25, accu-
racy decreases by one-half, i.e. the possible deviation will double; if R is only 1.56, accuracy decreases to one-quarter. R - 1)! For a With BM 70 P: when the (Partical) tank bottom tracing system is used, the maximum measuring range is approx. 10% smaller, i.e. max. tank height = 31.5 m !
The tank bottom tracing system is operated by way of Fct. 3.5.7 and Fct. 3.5.8. Installation and operating instructions BM 70 A/P Page: 52 11/00 8.6.16 Tank type, movement of product surface 8.6.17 Switching output For optimum results, data acquisition and evaluation must bematched to typical tank characteristics: movement of the product surface, rapid or slow changes in the product level, agitators, etc. Fct. 3.5.9 TANKTYPE STORAGE T. Storage tank, still surface, slow rate of change in level PROC.TANK change in level AGITATOR (for BM 70 A only) Process tank, slight surface movement, rapid rate of Process tank with agitator, turbulent product surface It is normally not critical if the tank type is set one step out. However, "AGITATOR" should not be set for a storage tank, and "STORAGE T." should not be set when an agitator is fitted. It is possible, for instance, that the measured value will change in small steps rather than linearly or will "freeze" at times when the setting is grossly incorrect. The functions for the switching output can be applied to:
a) the additional switching output in the Version "Ex-e or Ex-i current output HART", or b) the current output if Fct. 3.3.1 FUNCTION I is set to
"SW.OUTP.". longer selectable, i.e. they are skipped over). Fct. 3.6.1. FUNCTION S Use this function to select the measured variable. OFF (= deactivated; Fct. 3.6.2, 3.6.3 and 3.6.4 are no LEVEL DISTANCE CONVERSION REFLECTION ERROR OPEN (default) ERROR CLOSED
(Explanatory notes: see Table overleaf) Fct. 3.6.2. TYPE S This function is not shown (is skipped over) when OFF or ERROR OPEN or ERROR CLOSED is set under Fct. 3.6.1. Not significant is this case!
Use this function to set the type of switching output:
HIGH (= contact closes when upper limit of threshold
+ hysteresis / 2) exceeded LOW (= contact closes when lower limit of threshold -
hysteresis / 2) exceeded. Fct. 3.6.3 THRESHOLD This function is not shown (is skipped over) when OFF, ERROR OPEN or ERROR CLOSED is set under Fct. 3.6.1. Not significant in this case!
Use this function to define the threshold (limit value). Setting of LEVEL or DISTANCE under Fct. 3.6.1:
Unit same as for Fct. 3.1.1 TANKHEIGHT. If a refe-
rence or tank bottom offset is set, this must be taken into consideration!
Setting: CONVERSION under Fct. 3.6.1:
Unit same as in Fct. 3.2.3 UNIT.CONV. Setting: REFLECTION under Fct. 3.6.1:
Setting range : 0...100. Fct. 3.6.4 HYSTERESIS This function is not shown (is skipped over) when OFF, ERROR OPEN or ERROR CLOSED is set under Fct. 3.6.1. Not significant in this case!
Use this function to define the hysteresis. Setting: LEVEL or DISTANCE under Fct. 3.6.1:
Setting range and unit same as for Fct. 3.1.1 TANKHEIGHT. Setting CONVERSION under Fct. 3.6.1:
Unit same as in Fct. 3.2.3 UNIT.CONV. Setting REFLECTION under Fct. 3.6.1:
Setting range: 0...100. Examples of application and setting see Sect. 8.5 Installation and operating instructions BM 70 A/P Page: 53 11/00 Switching output characteristics FUNCTION S:
Fct. 3.6.1 LEVEL DISTANCE CONVERSION REFLECTION Overflow
= Threshold + Hysteresis / 2 HYSTERESIS Fct. 3.6.4 Underflow
= Threshold + Hysteresis / 2 THRESHOLD Fct 3.6.3 TYPE S Fct. 3.6.2 HIGH LOW Switching output open closed open closed closed open closed open Sw.output application Examples see Sect. 8.5 Error message Contact opens when error occurs Contact closes when error occurs Limit value, level
- Contact closes when upper limit exceeded
- Contact closes when lower limit exceeded Limit value, distance
- Contact closes when upper limit exceeded
- Contact closes when lower limit exceeded Limit value, conversion
- Contact closes when upper limit exceeded
- Contact closes when lower limit exceeded Limit value, reflection
- Contact closes when upper limit exceeded
- Contact closes when lower limit exceeded e.g. operation indicator Contact closed when supply power applied and open at power fail Switching function settable by way of ... Fct. 3.6.1 FUNCTION S Fct. 3.6.2 TYPE S Further parameters settable via ... Fct. 3.6.3 THRESHOLD Fct. 3.6.4 HYSTERESIS ERROR OPEN ERROR CLOSED LEVEL LEVEL no *
no *
HIGH LOW DISTANCE HIGH DISTANCE LOW CONVERSION HIGH CONVERSION LOW REFLECTION REFLECTION HIGH LOW no *
no *
yes yes yes yes yes yes yes yes no*
no*
yes yes yes yes yes yes yes yes OFF no *
no *
no *
* Setting has no effect on the function of the switching output!
Overflow =
Measured value higher than limit value
(= threshold plus hysteresis / 2) Underflow =
Measured value lower than limit value
(= threshold minus hysteresis / 2) Installation and operating instructions BM 70 A/P Page: 54 11/00 8.7 Functional checks 8.7.1 main menu 2.0 Test functions 8.7.3 Test of current output Input range Description Function (Fct.) 2.0 TEST 2.1.0 HARDWARE 2.1.1 MASTER 2.1.2 DISPLAY 2.1.3 STATUS 2.2.0 CUR.OUTP.I 2.2.1 VALUE I Special function Special function Select Module DIS Module MW Display of value 2.2.2 TEST I Options 2 mA 4 mA 6 mA 8 mA 10 mA 12 mA 14 mA 16 mA 18 mA 20 mA 22 mA Test of master hardware. Test of display hardware. Display of ID Number and status bytes. Display of actual value of the current output. Output of selected value to the current output. NOTE !!! With safety inquiry because current output is accessed direct !!!
(Exi = min. 3.6 mA) 2.3.0 SW.OUTP. 2.3.1 TEST S Options OPEN CLOSED Switches the switching contact on/off. NOTE !!! With safety inquiry because current output is accessed direct !!!
Display of master firmware version. Display of master firmware version. 2.4.0 FIRMWARE 2.4.1 MASTER Display 2.4.2 DISPLAY Display 8.7.2 Hardware test Testing of the BM 70 A/P hardware can be initiated as required with these functions when the device is operating. When an error is established, a message appears in the display (see Sect. 8.8). This hardware test is carried out automatically every time the BM 70 A/P is started up. Fct. 2.1.1 MASTER Select Function 2.1.1, as described in Sect. 8.2 and 8.3.
"TEST" is shown in the display during the automatic test, followed by "READY" on completion of the test. During the test the current output holds the last measured value; digital Communication is not possible during that time. Fct. 2.1.2. DISPLAY Select Funtion 2.1.2, as described in Sect. 8.2 and 8.3. Press the key; all segments in the display are Press key; all segments are switched off. This procedure (switching on/off) can be repeated any switched on. number of times with the key. Press the key to terminate the test. Fct. 2.2.1 VALUE I Select Function 2.2.1, as described in Sect. 8.2 and Press key to display the actual value of the current 8.3. output (terminals 31 and 32) in "mA". Terminate test by pressing the key. Fct. 2.2.2 TEST I A millia mmeter should be connected to terminals 31 and 32 for this test, see Sect. 7.8 Select Function 2.2.2, as described in Sect. 8.2 and 8.3. Press key.
Safety inquiry: SURE NO SURE YES }
After SURE YES, press the key for the 1st value in the Select with key following list to be present at the current output. Select current values with the key:
2 mA 4 mA 6 mA 8 mA 10 mA 12 mA 14 mA 16 mA 18 mA 20 mA 22 mA The connected millia mmeter indicates the selected current value. For instruments with Ex-i current output: in the 2 mA setting the minimum current of 3.6 mA is output. Terminate the test by pressing the key, and the actual measured value is again present at the current output. 8.7.4 Test of switching output Fct. 2.3.1 TEST S In this test, the switching contact (terminals 41 and 42) can be closed or opened. Select Function 2.3.1 as described in Sect. 8.2 and 8.3. Press the key. Safety inquiry: SURE NO SURE YES
} Select with After SURE YES, press key. Displayed: OPEN = switching contact is open. Press the key. Displayed: CLOSED = switching contact is closed. Terminate the test by pressing the key, and the switching output will resume its normal operating condition. key Fct. 2.1.3 STATUS After selecting "Module DIS" or "Module MW" after pressing the key in each case an Identity Number and an 8-digit binary number are displayed. If an undefined error occurs, please inform KROHNE Service of these values. Terminate the test by pressing the key twice. 8.7.5 Display of firmware version Fct. 2.4.1 MASTER This function shows the current main firmware version
(e.g. V.3.00) in the configuration menu. Fct. 2.4.2 DISPLAY This function shows the current firmware version of the display part. Installation and operating instructions BM 70 A/P Page: 55 11/00 8.8 Pointers and error messages during measurement 8.8.1 Different kinds of messages a) Pointers (operating conditions) during measurement provided by 6 markers in the 3rd (bottom) line of the display, see Sect. 8.8.2. b) Application errors, indicating an application error condition in which no valid measured values are currently established. By changing the tank conditions (e.g. filling) this error can usually be remedied, see
"Error list" in Sect. 8.8.3. c) Minor errors, indicating the failure of functions that usually do not affect measurement, see "Error List" in Sect. 8.8.3. d) Correctable errors, which can be remedied by operator action (manual) at the BM 70 A/P, or possibly by KROHNE Service, see "Error List" in Sect. 8.8.3. e) FATAL ERROR renders operation of the BM 70 A/P impossible; occurs only when the device is switched on (powered) or after special test functions have been executed, when the self-test identifies an error in the electronics of the BM 70 A/P, see "Error List" in Sect. 8.8.3. 8.8.2 Pointers provided by 6 markers during measurement Marker 1 2 3 4 5 6 Cause No current measured value Signal too strong Poor spectrum No measured value as yet Explanation The device is currently searching for a new measured value in which the
"measuring window" is opened. If the search for a plausible level fails,
"SIGNAL DOWN" appears in the Error List, see Sect. 8.8.3. Mean of reflected microwaves is very high. Gain is automatically stepped down. Brief showing of this marker, e.g. while tank is being filled or drained, is insignificant. In conjunction with stilling wells, the marker can also show for a longer time. Number of acceptable spectra is too low. Brief showing of this marker has no significance. If permanently on, this may result in uncertain (incorrect) measured values or the error message "NO M.VALUE", see Sect. 8.8.3. Evaluable measured values not available after the device has been started up. Measured value automatically set to the level of the tank bottom. This marker disappears when the first valid measured value is obtained. Tank bottom In tanks with dished bottom, for example, the measuring signal can "disappear"
if measurements are carried out near the bottom (within a range of 10% of the tank height, see Fct. 3.1.1, but minimum of 20 cm or 8" and maximum of 60 cm or 24"). The measured value is then automatically set to the level of the tank bottom. The digital input is active (voltage at terminals 81,82) or the device is in the range of the block distance detector (see Sect. 8.6.12). Measurement is thus suspended (frozen); last measured values present at the outputs and in the display. Measurement frozen Installation and operating instructions BM 70 A/P Page: 56 11/00 8.8.3. Error messages and their representation in display and at outputs The following list gives all error messages that can occur:
Error messages Description of error To correct device fault Type Text In 2nd line of display
(Sect
. 8.8.1) Output of errors via display and outputs, depending on setting Display ERROR MSG. Fct. 3.2.4 Current output I RANGE I Fct. 3.3.2 Switching output S FUNCTION S Fct. 3.6.1 b) c) d) e) NO M.VALUE LINE INTER-
RUPT SWEEP LOW WATCH DOG SPECT. ERR. NO DISP. CAL. DATA CONFIG. ERR Evaluable measuring signals not available Power failure detected Restricted functioning of microwave board Processor monitoring Empty spectrum faulty Configuration faulty EEPROM error: current output calibration data EEPROM error:
parameters faulty EEPROM defective EEPROM ERR. ADC ERR. Analog/digital converter defective Integrator defective Measuring signal too weak for evaluation Fault on microwave board Fault on microwave board CPU board defective INTEGR. SIGNAL DOWN VCO RISE VCO SWEEP FATAL ERROR If this error is displayed for a lengthy period, this could mean application-
induced errors. Check the application conditions!
During restart following a brief power failure. Display vanishes as soon as a valid measured value is again present. Measurement continued, possibly with reduced accuracy. If error present for longer time or "VCO SWEEP" error (see below) occurs, consult KROHNE Service!
If error present for longer time, this means an error on the CPU board; needs to be replaced by KROHNE Service!
The current empty-tank spectrum does not match the changed operating parameters. Remedy: record new empty spectrum (Fct 3.5.2). Reset parameters for the displayed units
(Fct. 3.2.2, 3.2.3). Calibration data of the current output need to be checked by KROHNE Service and reset if necessary. Check all operating parameters and reset if necessary. If error persists: EEPROM defective. Needs to be replaced by KROHNE Service!
EEPROM defective. Needs to be replaced by KROHNE Service!
CPU board defective. Needs to be replaced by KROHNE Service!
CPU board defective. Needs to be replaced by KROHNE Service!
No measuring signal, usually caused by a defect in the electronics. Microwave board defective. Needs to be replaced by KROHNE Service!
Microwave board defective. Needs to be replaced by KROHNE Service!
YES NO 4-20/2=E 4-20/22=E 4-20 ERROR OPEN ERROR CLOSED yes no yes no yes yes yes yes yes yes yes no no no no yes no yes no no no no yes
(22 mA) no no no no no no yes no no no no yes OFF LEVEL DISTANCE CONVERSION REFLECTION no no no no no no no yes yes yes
(22 mA) no yes yes yes yes yes yes yes yes no no no no no no yes yes yes yes yes yes no no no no no no no yes yes yes yes yes yes no no no no no no no no After a device start-up. If still possible, invoke Error List and note down any other errors. Consult KROHNE Service!
yes yes no 8.8.4 Error display during measurement In the setting level under Fct. 3.2.4 ERROR MSG. (error messages), it is possible to select whether errors are to be displayed during measurement. When YES set: "error message(s)" are displayed automatically to alternate with the measured value. The errors will continue to be displayed until their cause has been eliminated. 8.8.5 Error list All errors are stored in an Error List in the BM 70 A/P. The errors are retained in this list until: 1. the cause(s) of the error(s) has been eliminated and 2. the error has been acknowledged. Errors that have been acknowledged but whose cause has not been eliminated are retained in the Error List. To invoke the Error List, press keys . With you can page through the list. For further information on the Error List: see Sect. 8.3. Installation and operating instructions BM 70 A/P Page: 57 11/00 8.9 Messages on start-up When the BM 70 A/P is powered it will take about 1 minute before the first measured value is displayed (see also Sect. 5.6). During this time the following flashing messages appear in sequence in the display:
STARTUP - READY - START. After a short line failure (lasting up to several minutes) it is possible that "LINE INTERRUPT" will be displayed. In such a case, measurement is continued subsequently taking into account the history prior to the interruption. 8.10 Faults and symptoms during start-up and measurement You will be able to eliminate most of the faults and symptoms likely to occur with the BM 70 A/P by consulting the following chart. For easy reference, faults and symptoms are divided into the following groups:
Group D Group A Grop DA Group M Group S Display Signal output Display and signal output markers 1 - 6 in the display Switching output Please go through these charts before contacting KROHNE Service. Thank you!
Group D No. D1 Display totally "dead". Display Fault / Symptom D2 Display flashes "FATAL ERROR"
shortly after power has been switched on. D3 Display flashes "MIN VALUE" or "
MAX VALUE" when numerical values are being set. D4 Display shows "START". D5 Display flashes
"SPECT.ERR.". D6 Display indicates error message alternating with the measured value. Group A No. A1 Receiver instruments connected to Signal output Fault / Symptom current output indicate "zero". Cause Power source switched off. Primary fuse defective. BM 70 A/P is defective. The set numerical value is outside the acceptable setting range. Device carries out a hot start after a parameter change. Newly set operating parameters do not tally with the stored spectrum when e.g. the tank height (Fct. 3.1.1) and/or the antenna extension
(Fct. 3.1.4) have been changed. An error has occurred. Corrective action Switch on power source. Change primary fuse as described in Sect. 9.3. Replace BM 70 A/P signal converter
(instrument head) as described in Sect.7.3 . Note MIN. or MAX.VALUE displayed and set higher or lower numerical value. Wait until measured value appears. Record new empty spectrum as described in Sect. 8.6.12 (Fct. 3.5.2). Note down error messages, eliminate as described in Sect. 8.8 Cause Corrective action Polarity (connection) of receiver instruments is incorrect. BM 70 A/P current output board or connected receiver instruments defective.
"OFF" (= current output deactivated) is set under current output I, Fct. 3.3.1, "FUNCTION I". Connect up properly as described in Sect. 7.8. Test current output as described in Sect. 8.7.3.
- All tests OK: Check receiver instruments and replace if necessary.
- Test reveals faults: current output board defective; consult KROHNE Service or replace BM 70 A/P signal converter (see Sect. 7.3). Depending on the application, set LEVEL, CONVERSION, DISTANCE or REFLECTION under Fct. 3.3.1, see Sect. 8.6.8 Invoke display of error list, see Sect. 8.8. For cause and elimination, see Sect. 8.8. A2 2 or 22 mA present at the current output. An error has occurred. Installation and operating instructions BM 70 A/P Page: 58 11/00 If error message not to be displayed via the current output, set 4-20 mA without error message, as described in Sect. 8.6.8 (Fct. 3.3.2). A3 The measured value at the current output is incorrect, but the measured value in the BM 70 A/P display is correct. A4 Data Communication via the digital interface not functioning. Settings of the current output are incorrect. Set current output correctly as described in Sect. 8.6.8 (Fct.3.3.1 - 3.3.4). Communication interface set incorrectly. The computer system for Communication with the BM 70 A/P is incorrectly configured. Incorrect connection to the interface. Communication interface is defective. Set Communication interface, Sect. 8.6.9, correctly (Fct.3.3.5 - 3.3.7). Check computer system. Check connection. Consult KROHNE Service or replace BM 70 A/P instrument head as described in Sect. 7.3. Group DA No. DA1 Display and signal output Fault / Symptom Display and current output supply incorrect measured values. DA2 DA3 Display and current output supply a largely constant measuring error of approx. 19 cm. Display and current output supply a largely constant and large-size measuring error. DA4 Measuring error in the stilling well increases steadily in step with increasing distance. DA5 major measuring errors (> 3 cm) with Wave-Stick in the close range
(up to approx. 1 m distance) DA6 When the empty tank is being filled, the measured value initially stays at
"zero" and then, at 20...100 cm level, suddenly skips to the correct value. Display and signal output do not respond to changes in level. DA7 DA8 Display and signal output indicate
"zero" measured value, marker 5 is ON. DA9 Display and signal output indicate max. level but tank is empty. Cause Display and current output are set incorrectly. An error has occurred. Display and current output are, however, not set for error messages; markers 1-6 are perhaps ON. Distance piece is provided but not configured correctly. Tank height set incorrectly (level measurement). Reference offset (distance measurement) or tank bottom offset
(level measurement) incorrectly progra mmed. Stilling well not included in the configuration. Antenna type is incorrectly set. The BM 70 A/P is receiving an additional signal from the tank bottom. Corrective action Set display (Fct. 3.2.1 -3.2.4) and current output (Fct. 3.3.1 - 3.3.4) correctly, as described in Sect. 8.6.7 and 8.6.8. Invoke Error List, see Sect. 8.8, also for cause and elimination. If (also) one or several markers are ON, see Sect. 8.8.2. Set Fct. 3.1.5 DIST.PCE. (see Sect.8.6.4) to 120 mm when distance piece fitted, otherwise to 0 mm. Set Fct. 3.1.1 TANKHEIGHT (see Sect.8.6.2) correctly; if possible, use automatic tank height determination, Fct. 3.5.1 (see Sect. 8.6.11) Set offset values correctly, Fct. 3.1.7 -
3.1.8 (see Sect. 8.6.6). Set Fct. 3.1.6 STILLWELL correctly
(see Sect. 8.6.5). Set Fct. 3.1.3. ANTENNA to "WAVE-
STICK" (see Sect. 8.6.3) Activate "tank bottom tracking system", see Sect. 8.6.15 (Fct. 3.5.7 - 3.5.8) Digital input is activated, marker 6 is ON, measurement is suspended (frozen). Device is within block distance detection range, marker 6 is ON;
level too high or antenna contaminated. Foaming in vessel, inadequate reflectivity of the tank product, R too small; additionally, markers 1+3
may be ON. Tank with dished bottom: tank is more than 20% full, the BM 70 A/P is mistakenly located in the "tank bottom detection" range. Tank with dished bottom: the BM 70 A/P has stored an incorrect or incomplete empty spectrum. Deactivate the digital input, see Sect. 4.8. Reduce level and/or clean antenna, or deactivate Fct. 3.5.6 BD-DETECT (see Sect. 8.6.14) or reduce size of Fct. 3.1.2 BLOCKDIST. (see Sect. 8.6.3). On tall storage tanks, mount the BM 70 A/P farther away from the tank wall. Select distance as recommended in Sect. 6.1.2. Drain tank or switch the BM 70 A/P off for a short while. If unsuccessful, please consult KROHNE Service. Record new empty tank spectrum, see Sect. 8.6.12 (Fct. 3.5.2), or enlarge block distance (Fct. 3.1.2) as described in Sect. 8.6.3. Installation and operating instructions BM 70 A/P Page: 59 11/00 Group DA No. DA10 Display and signal output frequently Display and signal output Fault / Symptom indicate the maximum level. Cause Excessive amounts of vapour, condensate or dust in the tank, or heavy contamination (deposits thicker than approx. 3 - 7 mm or 0.1" - 0.3") on the antenna. Antenna cleaning operations cause strong reflections. DA11 Display and signal output indicate sizeable step changes in the direction of the maximum (possibly also mimimum) level. Storage tank: BM 70 A/P mounted centrically or on dome (manhole cover). Corrective action Clean antenna (install cleaning device if necessary). If unsuccessful, enlarge BLOCKDIST. under Fct. 3.1.2 (see Sect. 8.6.3) or deactivate Fct. 3.5.6 BD-DETECT (see Sect.8.6.14). Activate digital input during cleaning
(marker 6 is ON), measurement suspended (frozen), see Sect. 4.8. Change position of the BM 70 A/P. For recommended distance from tank wall, see Sect. 6.1.2, and note installation conditions in Sect. 6.1.3!
Or activate "multiple reflection identifier" under Fct. 3.5.5, see Sect. 8.6.14. Switch on tank type AGITATOR under Fct. 3.5.9, see Sect. 8.6.16. Set correct tank type (STORAGE TANK) under Fct. 3.5.9, see Sect. 8.6.16. DA12 Display and signal output indicate step changes:
during filling upwards during draining downwards DA13 Signal output (recorder) shows sinusoidal variations about the actually measured value (deviation:
up to 2 cm) in the upper part of the tank (approx 2 m). DA14 Display and signal output indicate constant measured values, although the level changes. DA15 Display and signal output indicate measured values at the level of the agitator blades. DA16 Display and/or signal output indicate incorrect conversion values, but level indication is correct. DA17 Display and signal output go suddenly to "zero" or block distance limit when tank continuously topped up. Process tank with extremely turbulent product surface. Storage tank, smooth surface, steady filling or draining procedures, incorrect tank type set. Avoid all sources of interference in the upper part of the tank. A bigger antenna might help to solve the problem. Activate the empty spectrum under Fct. 3.5.2 if measurements carried out without empty spectrum. If empty spectrum not recorded, record under Fct. 3.5.2, see Sect. 8.6.12. This has physical reasons and occurs mostly with slow changes in level when sources of interference are located in the upper part of the tank. Fixed tank internals unfavourably positioned, thus permanently simulating a constant level to the BM 70 A/P. No empty spectrum recorded and/or measurements carried out without empty spectrum. Digital input is activated, marker 6 is ON, measurement is suspended (frozen). Tank with "difficult" agitator blades. Record new empty spectrum with "
MAX. VALUES" under Fct. 3.5.2. Or change position of the BM 70 A/P on the tank. Note conditions described in Sect. 6.1.2. Reset conversion table with the PC-
CAT program. Deactive the digital input, see Sect. 4.8 Conversion table set incorrectly. Level located in range of block distance in front of antenna, see Fct. 3.1.2 in Sect. 8.6.3. Avoid this operating condition or, if empty spectrum (Fct. 3.5.2) is sufficiently good, reduce block distance
(Fct. 3.1.2) as described in Sect.8.6.3. markers 1-6 & in display Group M No. M1 markers 1-5 (one or several) ON. Reference(s) to possible faulty Fault / Symptom Cause M2 marker 2 ON for long periods or permanently. M3 marker 6 ON. M4 markers 3 and 4 ON. Level indicator is "zero". measurements. Note: very strong reflection signal
(e.g. measurement in the stilling well). Digital input is activated, measurements suspended (frozen). Device located in block distance detection range. This is a status display and not an error. This usually occurs on tanks with dished bottom, when the tank is empty, after the BM 70 A/P has been switched on or after a new empty spectrum has been recorded. Corrective action See Sect. 8.8 for significance of markers and elimination of possible faults. Not important if measured value is correct. Deactivate digital input, see Sect. 4.8. Check conditions for block distance detection, see Sect. 8.6.14. Fill tank!
Installation and operating instructions BM 70 A/P Page: 60 11/00 Group S No. S1 Switching output Fault / Symptom Switching output does not operate at the desired limit value (threshold) or does so in the wrong mode
(opens/closes). Switching output does not operate. S2 Cause Setting of switching function is incorrect. Corrective action Set switching output correctly as described in Sect. 8.6.17 (Fct. 3.6.1 -
3.6.4). Switching output defective. Check switching output as described in Sect. 8.7.4:
- Test OK: check setting and receiver instruments.
- Test reveals faults: switching output defective. Consult KROHNE Service or replace BM 70 A/P signal converter as described in Sect. 7.3. 8.11 Calculation of the measured value The following describes how the individual items of information are calculated from the measured distance:
Offset
BM 70 measured
(internal) distance tank height Fct 3.1.1
Distance Level conversion table
Ref.Offset Fct 3.1.7
TB Offset Fct 3.1.8 function display Fct 3.2.1 function I output Fct 3.3.1 BM 70 digital communication BM 70 local display BM 70 current output The measured primary distance is corrected by the offset and consequently standardized to the reference point
( = flange). The level is calculated as the difference between tank height and distance. Optionally, distance, level or a converted function can be output to the signal output and the local display. All items of information can be accessed via the digital Communication. In addition, the measured value can be shifted by a reference offset
(reference point for distance not equal to flange) or by a tank bottom offset (reference point for level not equal to tank bottom). Installation and operating instructions BM 70 A/P Page: 61 11/00 8.12 User program PC-CAT for Windows Our instruments of the BM 70 product line are easy to install. To facilitate configuration, each unit is supplied with the intuitive and time-tried software, PC-CAT for Windows. PC-CAT provides a number of useful features including:
Quick on-site configuration Print-out of configuration protocol Simple conversion, volume or correction tables Check routine to monitor functionality of the instrument Monitoring and recording of the radar signal during operation Trend and evaluation of the signal during operation PC-CAT works on all IBM-compatible PCs using Windows 9x or NT. PC-CAT Version 4.00 and higher can communicate with all current KROHNE level radar gauges including BM 70 A/P, BM 700, BM 702 versions, also with HART protocol and RS 485. The PC-CAT kit includes a PC adapter for current output. The adapter can be connected to the PCs standard RS 232 interface. PC-CAT allows convenient remote control of all functions of the signal converter. The vessel can be shown in schematic form together with the associated measured values and the measured spectrum. A trend graph of the output signal and threshold signal strength is also provided. All relevant instrument data can be recorded in the form of a data set small enough to be stored on a floppy disk or transfered electronically. Stored data can also be used for configuring other units of the BM 70 product line. PC-CAT files can later be used to analyse the performance of the level gauge. All graphs and screens can be exported a word processing systems or other programs. The customers PC containing PC-CAT is connected to the current output via the supplied Pcadapter Pcadapter, max. distance from the level gauge: 1000 m or 3300 ft. The PC adapter has no effect on in-line instruments such as milliammeters, recorders, etc., connected to the current output. Installation and operating instructions BM 70 A/P Page: 62 11/00 9 Power supply 9.1 Options, technical data A choice is offered of 2 supply power versions:
Version Voltage U Tolerance = voltage range Frequency 18-31.2 V
24V DCAC 24 V DC 24 V AC 115/230V 115 V AC AC 230 V AC
-25%
+30%
-25%
+10%
-25%
+10%
-25%
+10%
9.2 Fuses Device-internal fuses for power:
Power
(typical) *
7.5 - 10 W max. ripple /
harmonics within limits of tolerance 18-26.4 V 45-66 Hz 10 VA 85-127 V 45-66 Hz 12 VA 170-254 V 45-66 Hz 12 VA 10%
10%
10%
* Hazardous-duty limit: 20W / 40 VA 24 V DCAC*
115 V AC**
230 V AC**
T 1.25 A T 315 mA T 160 mA
*: Terminals 1 and 2 are both fuse-protected.
**: Only connection L (for TN system) is fuse-protected;
optionally also both connections N and L (for IT system), see Sect. 9.3. Location of fuses on the "line" board and replacement of fuses: see Sect. 9.3. In accordance with operative regulations, it may be necessary to provide additional fuse protection when installing the system. Recommended line fuse protection:
24 V DCAC 115 V AC 230 V AC min. T 2 A min. T 0.5 A min. T 0.25 A 9.3 Changeover of operating voltage and replacement of fuses Always switch off power source before commencing work!
Hazardous-duty systems:
Before opening the "flameproof enclosure" (large cover on the signal converter) in the hazardous area, make absolutely certain that there is no explosion hazard. Allow the prescribed waiting time of 10 minutes to elapse first!
1. Unscrew sunshade SD, if fitted. 2. Detach safety lock SV using Allen key (size 4 mm). 3. Remove cover DE from the electronic compartment
(flameproof enclosure) with the supplied special wrench. Installation and operating instructions BM 70 A/P Page: 63 11/00 4.1 Replacement of power fuse(s) Location of fuses: see drawings below. Use only the specified types. 4.2 Changeover of operating voltage (AC Version only) Through a different orientation of the voltage selector switch on the "line" board you can switch over between 115 V AC (85-127V) and 230 V AC (170-254V). For this purpose, pull the plug next to the fuse holders up and out (see drawing below), turn it 180 and plug it back into the holder. Also change the two fuses F2 and F3 to suit the selected voltage. Do not forget to alter the voltage information on the signal converter nameplate and in the terminal compartment!
4.3 Changeover between 1 fuse (TN system) and 2 fuses (IT system) (AC-Version only) Plug the blue wire on the "line" board into the desired position "TN" or "IT". Do not forget to alter the information TN or IT on the signal converter nameplate ("field power"). 5. Reassemble in reverse order, Points 3-1. Important: Ensure that the screw thread of cover DE on the electronic compartment is well greased at all times. Power supply unit 115/230 V AC Power supply unit 24 V DCAC Signal output 24V -5V
+5V light-emitting diodes for voltage control light-emitting diodes for voltage control voltage selector 230V 115V fuse F2 fuse F3 230V: T 160mA 115V: T 315mA isolated system (IT):
L IT TN brown blue grounded system (TN):
brown blue 9.4 Advice on safety T 1.25A
-5V
+5V 24V signal output Fuses F3 F4 brown blue Insulation rating The insulation of type BM 70 A/P level gauges is rated in conformity with VDE 0110/01.89, equivalent to IEC 664, and takes into account the following ratings:
Overvoltage category for the power line circuit: III Overvoltage category for the output circuit: II Insulation contamination level: 2 (inside the device) Disconnecting device, miniature fuse Type BM 70 A/P level gauges do not feature any device for switching or disconnection. Class of protection The BM 70 A/P level gauge is designed for Safety Class 1 in conformity with VDE 0106 Part 1. Installation and operating instructions BM 70 A/P Page: 64 11/00 24 V DCAC supply When connected to a "functional extra-low voltage with safety separation" power source (SELV or PELV) in accordance with VDE 0100, Part 410 or equivalent (inter)national regulations, connection of a safety conductor (PE) is not required. 115/230 V AC supply Connection to a power source with dangerous contact voltage: if due to protective measures in conformity with VDE 0100 a safety conductor PE is stipulated, it must be connected to the separate U-clamp terminal in the terminal compartment of the signal converter. HAZARDOUS-DUTY SYSTEMS The incoming cables for power supply are not of intrinsically safe design, not even in the BM 70 A/P i version. regulations. Electrical connection to be in conformity with VDE 0165, Section 5.6, or equivalent national Before making the electrical connection, make sure all cables leading into the BM 70 A/P-Ex are disconnected from supply!
When used in hazardous locations, the BM 70 A/P-Ex must, in conformity with VDE 0165, be incorporated in the PA equipotential bonding system, irrespective of the type of power supply. If the PA is connected via a separate conductor, this must be connected to the outer U-clamp terminal on the "neck" of the BM 70 A/P-Ex. Cancellation of equipotential bonding is only permitted when the BM 70 A/P-Ex is disconnected from supply. Installation and operating instructions BM 70 A/P Page: 65 11/00 10 Certificates and approvals 10.1 Hazardous-duty approvals Country Germany/Europe Authority Certificate No. PTB PTB99 ATEX 2061X EEx de IIC T6..T1 (Z.0) USA USA FM FM J.I.3000813 J.I.3006165 Class Device type BM 70 EEx de [ia]/[ib] IIC/IIB T6..T3 (Z.0) BM 70 i BM 70 I Div.1 Gr.B/C/D II/III Div.1 Gr.E/F/G BM 70 I/II/III Div.2 Gr. B/C/D/F/G I Div.1 Gr.B/C/D II/III Div.1 Gr.E/F/G I Div.2 Gr. A/B/C/D II/III Div.2 Gr. P/G BM 70.i BM 70.i Canada Japan CSA RIIS in preparation in preparation BM 70. BM 70. The texts of valid "Ex" certificates of conformity and type approvals are reprinted in the attached "Ex" documentation. 10.2 Other approvals and certificates Type Radio approval Radio Licence Preliminary approval to German pressure vessel code DruckbehV/TRB511 (flange V 96) Company Date/Certificate No. BZT FCC Vfg1117/1989; Vfg241/1995 JH5BM70 RWTV No. 5636602 Installation and operating instructions BM 70 A/P Page: 66 11/00 10.3 Explosion proof acc. to ATEX The instruments BM 70 A, BM 70 P and BM 700/702 are approved according to the new hazardous area directives ATEX 100a (certificate: PTB 99 ATEX 2061X). Instruments were divided up to the following Categories according to the operating range:
Probability of hazardous atmosphere Device in Ex zone
(G = gas/vapour/mist) Always, long-term or frequent Occasional Not or seldom and then only short-term The marking of the BM 70 x instrument depends on the converter and the flange system:
Device category 1G Device category 2G Device category 3G Zone 0 Zone 1 Zone 2 Flange system for zone 0 (1G) Flange system for zone 1 (2G) Converter with outputs Converter with outputs in Ex-e 1/2 G 2 G in Ex-i 1/2 G
(1)2 G Means:
1/2 G 2 G
(1)2 G Antenna system in zone 0 (1G), converter in zone 1 (2G) Converter as well as antenna system only in zone 1 (2G) Converter and antenna system in zone 1 (2G), but intrinsically safe current loops can go to/through zone 0 (1G) The available flange systems for BM 70 A, BM 70 P and BM 700/702 are:
Construction Short term in Horn antenna or Wave-Guide (with Metaglass) Wave-Stick with flange plate and Metaglas Wave-Stick with flange plate Wave-Stick without flange plate LP flange system
(horn antenna/Wave-Guide) Remarks:
ATEX certificate V96 WS 1C 1) WS 1B WS 2A or 2B Not in approval Device category 1G 2) 1G 2) 2G 2G Non-Ex Installation in Ex zone Zone 0 Zone 0 Zone 1 Zone 1 Non-Ex 1) For the Wave-Stick 1C (Zone 0) any electrostatic charging of the stick must be avoided in operation (otherwise only Zone 1). 2) Zone 0 is only defined for "atmospheric conditions". Therefore in the ATEX certificate the conditions T = -20...+60 C and p = 0.8...1.1 bar are assigned to the 1G versions for installation in Zone 0. This is not new, but now explicitly mentioned in the type test. Installation and operating instructions BM 70 A/P Page: 67 11/00 10.4 Radio approval TeleCommunications Decree 1117/1989 General licence No. 353 for radio transmitting and receiving installations Gazette 129, 20.11.1989 The installation and operation of the radio transmitting and receiving system "BM 70 Level Radar"
and "BM 70-Ex Level Radar"manufactured by Firma KROHNE Messtechnik GmbH & Co. KG, 4100 Duisburg, for telecontrol purposes (level gauging in metal tanks) at a frequency in the 8.1 - 9.4 Ghz frequency range, law concerning teleCommunication systems as adopted in the official announcement dated 03.07.1989. The radio systems may only be operated inside totally enclosed metal tanks. 1. Other teleCommunication systems and teleCommunication equipment serving the public sector, is hereby authorized pursuant to 1 and 2 of the including radio systems, must not suffer any interference. 2. Radio systems that are put onto the market under the above-mentioned type designations do not individually require special approval if they are electrically and mechanically consistent with the models examined and tested by the Central Approval Office for TeleCommunications (ZZF), and bear the following certification mark of the Deutsche Bundespost: "Postsignum Z G490353X" and the name of KROHNE Messtechnik GmbH & Co. KG, 4100 Duisburg, and the type designation
"BM 70 Level Radar" or "BM 70-Ex Level Radar". 3. The identification mark must be embossed or engraved on the housing or on a plate made of metal or similarly strong material. The plate must be attached to the housing in such a way that it is impossible to remove or can only be removed by the use of force. The identification mark must be visible at all times from the outside. 4. The operator of such radio systems has no benefit of protection whatsoever against interference from other teleCommunication systems or teleCommunication equipment (e.g. including radio systems that are duly operated in the same frequency range). 5. The above-mentioned radio systems may not be linked to other teleCommunication systems or teleCommunication equipment without special approval from the Deutsche Bundespost. 6. This "general licence" can at any time be revoked in toto - or in isolated cases can also be revoked for individual radio systems by the relevant local licensing authority. Additional notes for manufacturer and users 2. The 1. The manufacturer of these generally licensed radio systems has the responsibility towards the Deutsche Bundespost to ensure that a reprint of this "general licence" accompanies each and every instrument brought onto the market under the above-mentioned certification mark. to link licence teleCommunication systems or teleCommunication equipment is governed by the respective requirements (provisions concerning private-sector cabled teleCommunication equipment, and the teleCommunication regulations). Information in this respect is available from the appropriate teleCommunication offices
(acceptance and testing service). radio systems with other these 281-3 A 3552-2/A Bundesministerium fr Post und Telekommunikation 1421 Gazette 23/95 Decree 241/1995 Extension of the general licence No. 353 for radio transmitting and receiving installations To Gazette Decree 1117/1989, page 2066 The above-mentioned general licence for radio installations issued to the company of KROHNE Messtechnik GmbH & Co. KG, 47058 Duisburg, shall with immediate effect also include radio installations that operate at a frequency in the frequency range of 8.1 - 9.9 GHz, for the same purpose are placed by the company on the market and which are marked in accordance with the general licence. At the same time, the purpose is extended to level measurements in concrete tanks having a minimum wall thickness of 19 cm. The radio installations may only be operated in fully enclosed tanks. 314-1A 3552-2/A Installation and operating instructions BM 70 A/P Page: 68 11/00 10.5 CE Manufacturer's declaration DECLARATION OF CONFORMITY We, KROHNE Messtechnik GmbH & Co.KG Ludwig - KROHNE - Strae D - 47058 Duisburg declare on our own responsibility that the products BM 70 A/P Level-Radar 24V DC/AC - Ex-e current output / RS 485 BM 70 A/P Level-Radar 115/230V AC - Ex-e current output / RS 485 to which this declaration refers, are in conformity with the following standards:
EN 50081 - 1 : 1993 - 3 EN 50082 - 2 : 1995 - 3 pr EN 50178 : 1994 - 8 EN 61010 - 1 : 1993 - 4 in accordance with the provisions of Directives 89 / 336 / EEC und 73 / 23 / EEC. Duisburg, 01.09.1997
(Place and date of issue)
(signed: Company management) Installation and operating instructions BM 70 A/P Page: 69 11/00 11 Order information Technical information relevant to the order BM 70 A/P Level-Radar Connecting flange: ................... ________________________________________________ Flange and antenna material:... ________________________________________________ Waveguide seal: ...................... Viton FFKM Kalrez2035 Other _____________ Antenna type:...........................Type 4 (200 mm) Type 3 (140 mm)
................................................Type 1 (74 mm) Type 2 (100 mm) [for stilling well dia.: _ ]
................................................Wave-Stick Wave-Guide (length: _______________ ) Antenna extension:................... ________________________________________________ Power supply:...........................24V DCAC 200-240V AC 100-120V AC Signal output: ........................... Current output: active (Ex-e) Ex-i passive alternatively: ................. Digital: RS 485 Bus: __________________________ Explosion protection.................none Zone 0 Zone 1 Special items
Additional calibration (BM 70 A Precision)
High-precision version (BM 70 P)
90 Antenna extension ............. S-shaped antenna extension
Purge connection ..................... Antenna heating
Others: ____________________________________________ Installation and operating instructions BM 70 A/P Page: 70 11/00 12 External standards, codes and directives DIN V 19259: 1996-10. Documentation of devices, Data types with classsification scheme for measuring equipment with analog or digital output for industrial process measurement [in German]
VDI/VDE 3519 (part 2): 1994-12. Level measurement of liquids and solids (bulk solids) [in German]
DIN VDE 0165: 1991-02. Installation of electrical apparatus in hazardous areas [in German]
DIN EN 50014: 2000-02. Electrical apparatus for potentially explosive atmospheres, General requirements DIN EN 50018: 1995-03. Electrical apparatus for potentially explosive atmospheres, Flameproof enclosure "d"
DIN EN 50019: 1996-03. Electrical apparatus for potentially explosive atmospheres, Increased safety "e"
DIN EN 50020: 1996-04. Electrical apparatus for potentially explosive atmospheres, Intrinsic safety "i"
DIN EN 50284: 2000-02. Special requirements for construction, test and marking of electrical apparatus of equipment group II, category 1 G DIN EN 50081-1 (VDE 0839 part 81-1): 1993-03. Electromagnetic compatibility (EMC), Generic emission standard, Part 1: Residential, commercial and light industry EN 50082-2: 1995-03. Electromagnetic compatibility, Generic immunity standard, Part 2: Industrial environment NE 21 NAMUR recommendation Electromagnetic compatibility (EMC) of industrial process and laboratory control equipment, 1998-08 DIN EN 61010-1 (VDE 0411 part 1):1993-04. Safety requirements for electrical equipment for measurement, control and laboratory use, general requirements pr EN 50178 / DIN EN 50178: 1994-08: Electronic equipment for use in power installations Directive 89/336/EWG (CE marking) DIN EN 60068-2 (IEC 68-2): 1995-03. Environmental tests DIN IEC 68-2-6: 1990-06. Electrical engineering, Basic environmental test procedures DIN EN 60654, part 1 (IEC 654-1): 1994-02: Industrial process measurement and control equipment; Operating conditions; Climatic Conditions DIN EN 60529: 2000-09: Degrees of protection by enclosures (IP Code) DIN 2501: 1972-02: Flanges - Fitting dimensions [in German]
DIN 2527: 1972-04: Blind flanges [in German]
ANSI B 16.5: 1988: Pipe Flanges and Flanged Fittings DIN 11851: 1998-11: Fittings for food, chemical and pharmaceutical industry - Stainless steel screwed pipe connections - Design for rolling in and welding-on DIN EN 10088, Teil 1: 1995-08: Stainless steels - Catalogue of the stainless steels DIN 55990: 1979-12: Verification of paints and similar coating materials; Powder mould coatings .... [in German]
HUG-3: HART FSK Physical Layer Specification Rev. 7.2: 1993-05 13 Quality assurance KROHNE Messtechnik GmbH & Co. KG is certified to:
DIN ISO 9001 / EN 29001 and KTA 1401 QSP 4A (nuclear power engineering) Installation and operating instructions BM 70 A/P Page: 71 11/00 Annex A: Technical data Range of application Mode of operation / system structure Distance, level, volume and reflection measurement of liquids, pastes, slurries, solids and particulate material on storage and process tanks or containers made of metal or concrete, and also in stilling wells FMCW-Radar in the X-Band (8.5-9.9 GHz) with digital signal processing;
compact device, modular design 1 2 3 4 Input Measured variable Measuring range Block distance Rate of change in level Output Variant 1 Ex-e current output HART with switching output:
and digital input:
Variant 2 Ex-i current output HART with optional switching output:
Variant 3 RS 485 interface Primary variables: distance, reflection; derived variables: level, volume Min. tank height: 0.5 m max. measuring range: 40 m (optionally upto 100m); Wave-Stick: 20 m, BM 70 P = 35m Min. 0.2 to 1.0 m; see Sect. 3.3 10 m/min; BM 70 P 1m/min active (current source); Ex-e 4-20 mA (error: 2 mA or 22 mA) 0.05 % (rel. 20 mA; 25C) 100 ppm/K (typically 30 ppm/K) 500 Type Current range Accuracy/linearity Temperature drift Load impedance max. 100 mA / 30 V DC or 30 V AC; internal resistance 20 ; potential-
free to "freeze" the measured value; voltage: 5 to 28 V DC;
input resistance: 1 k ; potential-free Type Current range Temperature drift Accuracy/linearity Supply voltage Load impedance 6 ... 30 V; I Low 2 V; I High 900 A (U = 30 V), I High = 200 A (U = 8 V) Transmission rate Address:
Protocols:
passive (current sink); Ex-i 4-20 mA (error 3.6 or 22 mA);
4 mA constant for HART-Multidrop 100 ppm/K (typically 30 ppm/K) 0.05 % (rel. 20 mA; 25C) 8-30 V (terminals 31 and 32)
(US - 8 V) / 22 mA, (US = external supply voltage) 1200 to 38400 bauds 0 to 255 KROHNE Protocol, Modbus-RTU, HART active (current source); not communicable;
Ex-e 4-20 mA (error 2 mA or 22 mA) 0.3 % (rel. 20 mA; 25C) 200 ppm/K (typically 70 ppm/K) 250 Low: I < 2 mA; High: I = 22 mA
(R 250 ) and no-load voltage 18 V with additional current output Type Current range Accuracy/linearity Temperature drift Load impedance When operated as switching output:
Variant 4: PROFIBUS-PA (Ex-i) Hardware Physical Bus characteristics Base current Default current Variant 5: Foundation Fieldbus (FF) Breakdown signal 5 6 6.1 6.2 Measuring accuracy Error of measurement Repeatability Measured-value resolution Effect of ambient temperature Operating conditions Installation conditions Ambient conditions Hazardous locations Ambient temperature at signal converter Flange temperature to IEC 61 158-2 and the FISCO model 9 ... 30 V; 0.3 mA max.; 4.2 W max. 10 mA 6 mA see Supplementary Instructions Current output: error signal 2/22 mA or 3.6 mA (Ex-i), plain text in local display Switching contact: opening or closing of the contact Digital interfaces: error flags Reference conditions and error curves: see Sect. 5.1 and 5.2 0.5 error of measurement BM 70 A: 1 mm; BM 70 P: 0.1 mm No significant effect on measured value(- 1 ppm/C);
(see also signal outputs) Avoid interference reflections and multiple reflections BM 70 A/P Ex:
Zone 0,1,2; IIC/IIB, T6...T2 Functional range:
Horn antenna, Wave-Guide (Tamb 50C/122F):
-20...+55C (-24...+131F)
-40...+70C (-40...+158F)
-30...+130C (-22...+266F) Installation and operating instructions BM 70 A/P Page: 72 11/00 Horn antenna, Wave-Guide (Tamb 55C/131F):
High-temperature version with:
- FFKM gasket (Kalrez 4079/Parofluor V8545-75):
(safety limit 280C/536F)
- Kalrez 2035 gasket:
- Viton gasket:
- FEP-sheathed gasket:
-30...+120C (-22...+248F)
-30...+250C (-22...+482F)
-30...+210C (-22...+410F)
-30...+200C (-22...+392F)
-30...+200C (-22...+392F)
-20...+100C (-4...+212F) Wave-Stick:
Environment class Protection category Shock resistance Vibration endurance limit EMC 6.3 Product conditions Physical properties Relative permittivity Limitations Temperature of product Operating pressure Horn antenna/Wave-Guide Wave-Stick 7 8 9 Component parts Dimensions and weights Materials Housing: signal converter Flange system, antenna, extension Gaskets Wave-Stick Process connection Horn antenna/Wave-Guide Wave-Stick Dairy screw connection Tri-Clamp connection Electrical connection User interface Keypad Magnetic sensors Local display User language Units of measurement Power supply 24 V DCAC 115/230 V AC Power consumption pressure-dependent up to +150C/302F Locations exposed direct to open-air climate, D1 Severity in conformity with EN 60654-1
(signal converter) IP 66 / IP 67 Impact test to EN 61010, Sect. 8.2 with 0.5 J energy; drop test to prEN 50178 IEC 68-2-6 and prEN 50178 (10-57Hz:0.075 mm/57-150 Hz:1 g) EN 50081-1, EN 50082-2; NAMUR Recommendation No effect on measurement results; to ensure reliable measurements, the relative permittivity should have the following minimum values:
r > 1.5; r < 3: stilling well recommended; Wave-Stick immersed: r > 4 Liquid a mmonia (NH3); liquid hydrogen (H2); liquid helium (He) unrestricted (but be aware of ambient and flange temperatures) dependent on flange size and pressure rating (see Table) Standard: max. 64 bar (higher on request) bar psig
+16 232 Pressure
+1
+15
-1
-15
(46 - 0.3T[C]) bar
(740 - 2.4T[F]) psig
-20
-4 Temperature T
+100
+212
+150 C
+302 F see Sect. 7.2 Aluminium with electrostatic powder coating; sight window: glass Stainless steel 1.4571 or 1.4435, Hastelloy C4 or B2, titanium, tantalum;
(other materials on request) FFKM (Kalrez 4079 or Parofluor V8545-75); Kalrez 2035; Viton (FPM); FEP-
sheathed (basically, all versions include PTFE as the material in contact with the product) only PTFE in contact with product; flange made of 1.4571 (316 Ti) DIN 2501 / DIN 2526, Form C DN 50 DN 200 / PN 6 PN 64;
ANSI B 16.5 2 8, Class 150/300 lb/RF;
DIN 2501 / DIN 2526, Form C DN 50 150;
ANSI B 16.5 2 6;
DIN 11 851 DN 50, DN 65, DN 80 SMS 1145 51 mm, 63 mm, 76 mm ISO 2852 2 4 Cable entries:
Terminals:
PE or FE and PA:
Shielding for RS 485 cable and for current output cable > 100 m 3x M251,5 0.5-2.5 mm (solid conductor: max. 4 mm) U-clamp terminal (max. 4 mm) 3 keys operation with magnetic pin without opening the housing 2-line illuminated LCD + 6 status markers German, English, French, Italian, Spanish, Portuguese, Swedish Length: m, cm, mm, inch, ft, %
Volume: m, Liter, US Gal, GB Gal, ft3, bbl, %
Conversion unit: any text 18-31.2 V DC or 18-26.4 V AC (45-66 Hz) optionally: 100-120 V AC (tolerance: 85-127V), 200-240 V AC (tolerance: 170-254V); 45-66 Hz Typically 7.5 - 10 W / 12 VA Installation and operating instructions BM 70 A/P Page: 73 11/00 Annex B: Type code / nameplates Type code See nameplate on signal converter and flange system (places not needed in the type code may be omitted):
BM70 . / . / . - E Ex 1 2 3 4 5 6 Tank level gauge Signal converter series 70A 70P 700 702
: Advanced
: Precision
: Low Cost
: 2-wire Symbol for type of protection for the signal outputs i unassigned
: intrinsically safe I/O function
: non intrinsically safe I/O function Symbol for type of protection for the terminal compartment E D unassigned
: terminal compartment in Increased Safety e (standard)
: terminal compartment as Flameproof Enclosure d (option)
: intrinsically ia (BM 702) Ambient temperature range S unassigned
: Extended range 40C ... +55C
: Standard range 20C ... +55C Territory of application for explosion protection certification E
: Europe (EG, CENELEC) Safety function Ex
: explosion-protected electrical equipment 1:
2:
3:
4:
5:
6:
7:
Kennzeichnung des Flanschsystems (siehe Flansch-Datenschild):
..(1).. ..(2).. ....(3)...... nicht-explosionsgeschtzte Ausfhrung
..(1).. ..(2).. ....(3)...... E Ex ..(4).. explosionsgeschtzte Ausfhrung
(1)
(2)
(3) Flange system series V96 WS EA LP
: Flange system V96
: Flange system Wav-Stick
: Enamel antenna system
: LP flange system Material of waveguide window unassigned : standard (stainless steel) H
: Hastelloy window (T min = -60C)
: stainless steel
: Hastelly B
: Hastelloy C
: Titanium
: Tantalum
: Monel Materials of wetted parts
- Flange system V96:
Antennas and flanges, including coating:
SS HB HC Ti Ta Mo Gasket materials:
FFKM : Kalrez 4079 or Parofluor V8545-75 K2035 : Kalrez 2035 K1091 : Kalrez 1091 FPM : Viton FEP
: FEP-sheathed gasket Installation and operating instructions BM 70 A/P Page: 74 11/00
- Flange system WS LPTFE PTFE SS PTFE : stainless steel / PTFE non-conductive SS PP
: PTFE conductive
: PTFE non-conductive
: stainless steel / PP non-conductive
- Flange system EA EM PTFE : Enamel + PTFE
(4) Field of application, Device Group II 1G 2G
: Category 1G (application in Zone 0)
: Category 1G (application in Zone 0) Informationen on nameplates (example) Signal converter:
Manufacturer Version Type acc. to type code Sales order number Year of manufacture Certification information Power supply Voltage with tolerances 99 2061 II (1) 2G European conformity 0102 Firmware version no. Serial number Inscription as requestes by customer Radio approval Safety information Type, terminal marking and connection data of the intrinsically safe signal outputs Flange system:
Hersteller Manufacturer Type acc. to Typ gem dem type code Typenschlssel Seriennummer Serial number Operating/test Betriebs- / Prfdruck pressure Year of manufacture Baujahr 99 2061 Betriebstemperatur Operating temperature Beschriftung nach Kundenwunsch Inscription as requestedby customer Installation and operating instructions BM 70 A/P Page: 75 11/00 Sanitary connection / G 1 thread:
Operating temperature Operating/test pressure Year of manufacture Type acc. to Type code Serial number Manufacturer Approval information Attention!
When mounting the G 1" screw connection you have to take care that the marking on the wrench faces will not be damaged
(do not use pipe wrench!) Operating/test pressure Betriebs-/Prfdruck Operating temperature Betriebstemperatur Manufacturer Hersteller Baujahr Year of manufacture Approval information Zulassungsinformation Beschriftung nach Inscription as requested by customer Kundenwunsch Typ gem dem Seriennummer Type acc. to type code Typenschlssel Serial number Installation and operating instructions BM 70 A/P Page: 76 11/00 Annex C: Spare parts Installation and operating instructions BM 70 A/P Page: 77 11/00 Installation and operating instructions BM 70 A/P Page: 78 11/00 Installation and operating instructions BM 70 A/P Page: 79 11/00 Annex D: Signed declaration to accompany a device returned to KROHNE If you need to return level gauges for testing or repair to KROHNE If installed and operated in accordance with these operating instructions, your level gauge will rarely present any problems. Should you nevertheless need to return a device for checkout or repair, please pay strict attention to the following points. Due to statutory regulations concerning protection of the environment and the health and safety of our personnel, KROHNE may only handle, test and repair returned level gauges that have been in contact with liquids if it is possible to do so without risk to personnel and environment. This means that KROHNE can only service your unit if it is accompanied by a certificate in line with the following model confirming that the device is safe to handle. If the unit has been operated with toxic, caustic, flammable or water-endangering liquids, you are kindly requested to check and ensure, if necessary by rinsing or neutralizing, that all cavities are free from such dangerous substances, to enclose a certificate with the level gauge confirming that it is safe to handle and stating the liquid used. KROHNE regret that they cannot service your level gauge unless it is accompanied by such a certificate. S P E C I M E N certificate Company: ............................................................ Address: ................................................................. Department: ....................................................... Name: ............................................................ Tel. No.: .................................................................. The enclosed level gauge BM70A/P: ................................................ KROHNE Order No. or Series No.: .................................. has been operated with the following liquid
....................................................................................................... Because this liquid is water-endangering * / toxic * / caustic * / flammable *
we have
- checked that all cavities in the unit are free from such substances *
- flushed out and neutralized all cavities in the unit *
(* delete where not applicable) We confirm that there is no risk to man or environment through any residual liquid contained in this level gauge. Date: ...................................................... Signature: ................................................... Company stamp:
Installation and operating instructions BM 70 A/P Page: 80 11/00 Annex E: Table on documentation of device configuration CHECK LIST PARAMETERS BM 70 A/P.Vers.:.............. Date: ............... Device No. .................................................: Comm. No.... :....................... ....................... Location......................................................: ...................... ....................... ....................... Contact person...........................................: Telephone.... ....................... : ....................... Remarks :................................................... ...................... ....................... ....................... ....................................................... ...................... ....................... ....................... Menu item....................................................Changed on .... :....................... :.......................:
Fct. Configuration parameters (excerpt) 3.1.1 Tank height ....................................: ...................... :....................... :.......................:
3.1.2 Block distance ...............................: ...................... :....................... :.......................:
3.1.3 Antenna..........................................: ...................... :....................... :.......................:
3.1.4 Antenna extension.........................: ...................... :....................... :.......................:
3.1.5 Distance piece ...............................: ...................... :....................... :.......................:
3.1.6 Still well / diameter ........................: ...................... :....................... :.......................:
3.1.7 Offset, reference ............................: ...................... :....................... :.......................:
3.1.8 Offset, tank bottom........................: ...................... :....................... :.......................:
3.3.1 Current output, function ...............: ...................... :....................... :.......................:
3.3.2 Current output, range/error...........: ...................... :....................... :.......................:
3.3.3 Min. scale for current ....................: ...................... :....................... :.......................:
3.3.4 max. scale for current....................: ...................... :....................... :.......................:
3.3.5 Baud rate........................................: ...................... :....................... :.......................:
3.3.6 Address ..........................................: ...................... :....................... :.......................:
3.3.7 Protocol..........................................: ...................... :....................... :.......................:
3.5.2 Empty-tank spectrum ....................: ...................... :....................... :.......................:
Time constant ................................: ...................... :....................... :.......................:
3.5.3 3.5.4 Tracking speed ..............................: ...................... :....................... :.......................:
3.5.5 Multiple reflections (Yes/No) .........: ...................... :....................... :.......................:
3.5.6 Block distance detect.(Yes/No) .....: ...................... :....................... :.......................:
3.5.7 Function FTB .................................: ...................... :....................... :.......................:
3.5.8 Epsilon-R .......................................: ...................... :....................... :.......................:
3.5.9 Tank type .......................................: ...................... :....................... :.......................:
3.6.1 Switching output, function ...........: ...................... :....................... :.......................:
3.6.2 Switching output, limit type..........: ...................... :....................... :.......................:
3.6.3 Switching output, threshold .........: ...................... :....................... :.......................:
3.6.4 Switching output, hysteresis ........: ...................... :....................... :.......................:
Installation and operating instructions BM 70 A/P Page: 81 11/00 Annex F: Index 8.5.2, 8.6 5.2 4.7 7.8 8.4, 8.5, 8.6, Annex E 8.3, 8.4 7.8 7.8 4.6, 8.6.9 Address 7.5, 8.6.16 Agitator 5.8, 6.2.2 Ambient temperature 6.1.3, 7.4, 8.6.3 Antenna extension 5.2, 6.1.4, 7.2, 7.5 Antenna size 8.6.3 Antenna type 1 Application range 6, 10 Approvals 7.4 Assembly 4.6, 8.6.9 Baud rate 3.3, 8.6.3 Block distance Block distance detection 3.4, 8.6.14 BM 70 A Precision Breakdown information Cable entries Configuration Configuration menu Connecting cable Connection diagrams Conversion table Cooling device Current output Curved extension Cylindrical tank Device configuration Digital Communication Digital input Dimensions Display Distance piece Documentation Electrical connection EMC Empty (-tank) spectrum 8.6.12 6.2.6 Environment class 8.6.7, 8.6.8, 8.6.17, 8.8 Error 4.7, 8.6.17, 8.8.3 Error message Error of measurement 5.2 page 4, 8.7.5 Firmware version 7, 9.3 Flameproof enclosure 7.2; 7.4 Flanges Flange system 2.3, 7.4 6.2.3 Flange temperature FMCW-Radar 2.1 Foundation Fieldbus (FF) 4.1, 8.6.9 Freeze Frequency sweep FTB Functional checks Functional ground Fuses Gaskets HART Hazardous-duty "Ex"
4.8 2.1 8.6.15 8.7 7.8 9.2, 9.3 6.2.3, 7.6.3 4,1, 4.4 6, 6.2.1, 7, 9.3, 10 6.1.7 4.2, 4.3, 4.5, 7.8, 8.6.8, 8.7.8 6.1.6, 8.6.3, 8.6.4 6.1.2 8.4, 8.6, Annex E 4.1, 4.6, 8.6.9 4.2, 4.8 7.2 8.1, 8.6.7 6.2.3, 7.4, 8.6.2 Page 3 7.8 6.2.10, 10.5 6.1.7 6.2.3, 7.2, 7.4, 7.8, 10.3 3.3, 6.1.2, 6.1.3, 6.3.5, 7.2 4.2, 4.8 5.4, 8.6.17 6.2.8 6.1 9.4 4.8, 8.10 6.1.2, 6.1.6, 8.6.12 4.3, 7, 7.8 9.2, 9.3 8.1, 8.2 4.6, 8.6.9 Heating device High-temperature version Horn antenna Hot start Hysteresis Impact resistance Installation Insulation Interference Internals Intrinsic safety IT system Keys KROHNE Protocol Language of display texts Load impedance Local display Long-term drift magnetic sensors maintenance manhole cover markers materials of construction Measured value, calculation of Measured value, resolution of Measured variables Measurement principle Measuring accuracy Measuring range ModBus Modularity Multidrop Multiple reflections Nameplate Operating pressure Operating voltage Operating voltage, changeover of 9.3 Operator control concept 8.3 Order information Order numbers Annex C Out-of-range performance 3.4 Output 4 Parameter setting, see Configuration PC-CAT Point-to-point Positioning Post Office /Radio approvals Power supply Pressure separation Product conditions Product temperature Profibus Protection category 8.6.10 4.2, 4.3, 4.5 8.1 5.7 8.1 6.4 6.1.2 4.8, 8.1, 8.8.2 7.6 8.11 5.4 3.1 2.1 5 3.2 4.1, 8.6.9 2.3, 4.1 4.1, 4.4 8.6.14 Annex B 6.3.5 9.1, 9.3 8.12 4.1, 4.4 6.1.2 10 9 2.3 6.3 6.3.4, 10.3 8.6.9 6.2.1, 6.2.7, 7 11 Installation and operating instructions BM 70 A/P Page: 82 11/00 Protocol Purging device Quality assurance Reference conditions Reference offset Reflection Rel. Permittivity Repeatability Replacement of signal converter Returning the device RS 485 Safety conductor Safety lock Safety, advice on Setting, see Configuration Shielding strip Side vessels Signal converter Signal output Signal processing Software history Spare parts Spectrum Standards Stilling well 8.6.5 Storage temperature Sunshade Supply scope Supply voltage Switching output Tag name Tank bottom offset Tank bottom tracking Tank fitting Tank height Tank type Tank wall Technical data Temperature Temperature drift Terminals Terminating resistor Test functions Threshold Time constant TN system Tracking speed Transient recovery time Transmission angle Transport Turn-on characteristics Type code Units Vessel, see Tank Vibration endurance limit Volume measurement Warranty Wave-Guide Wave-Stick Weight 3.1, 8.5.2 Page 3 6.1.2, 6.1.5, 7.1 3.3, 6.1.3, 7.1, 7.2, 7.5 7.2 8.6.9 6.1.7 13 5.1 8.6.6 3.1, 8.6.1 6.3.2 5.3 2.3, 7.3 Annex D 4.1, 4.6, 8.6.9 9.4 9.3 Page 3, 6, 9.4 6.1.8 6.1.2 7.6.1, 2.3, 7.4 4, 5.8 2.2 page 4 Annex C 2.2, 8.6.12 12 3.3, 6.1.4, 6.1.2, 6.2.5 6.1.9, 6.2.2 Page 3 4.3 4.2, 7.8, 8.6.17 8.6.10 8.6.6 8.6.15 6.1.3, 6.1.8 3.2, 8.5, 8.6.2, 8.6.11 8.6.16 6.1.2 9.1, Annex A 5.8, 6.2.2, 6.2.3, 6.2.4, 6.2.5, 6.3.4, 10.3 5.8 7.8 7.9 8.7.1 8.6.17 5.5, 8.6.13 9.2 8.6.13 5.5 6.1.1 Page 3 5.6 Annex B 8.6.1 6.2.9 Installation and operating instructions BM 70 A/P Page: 83 11/00
1 | Manual addendum | Users Manual | 9.12 KiB |
ADDENDUM TO LEVEL RADAR INSTALLATION AND OPERATION INSTRUCTIONS: 7.02182.77.00 Compliance with U.S.A. FCC Part 15 Rules (FCC ID JH5-70) and FCC Part 90 Rules (JH5BM70) The BM70A Level Radar complies with Part 15 of the FCC Rules when installed in totally enclosed metal tanks. A label is affixed to the instrument as shown below:
FCC ID JH5-70 Krohne Level Radar When installed in totally enclosed metal tanks, this device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference which may cause undesired operation.
When installing the metal, horn antenna versions with metal gaskets (all metal, metal-sheathed, or spiral-wound metal gaskets), only normal installation procedures should be observed. When installing a device with a Wave-Stick PTFE antenna or with a non-
metallic gasket, the installation must include the shielding strip (item C) and the strap retainer (item S) shown in Section 6.1.8 Ultimate installation on the tank on page 23. Also, the flange bolt holes, top and bottom, must be completely covered by the bolt heads and nuts which may require the use of flange bolts and flange nuts or appropriately-sized flat washers. The item referred to by the asterisk should read * required for European radio approvals and United States FCC Part 15 approval for Wave-Stick version or FCC Part 15 approval when installed with non-metallic gaskets. When installing the BM70A in other than totally enclosed metal tanks, a site-
specific license under FCC Part 90 Rules must be obtained as Krohnes FCC identifier - FCC ID JH5BM70. Contact Krohne for procedure to obtain license. Please note: changes or modifications not expressly approved by Krohne, could void the users authority to operate the equipment.
frequency | equipment class | purpose | ||
---|---|---|---|---|
1 | 2002-04-16 | 8500 ~ 9500 | DXX - Part 15 Low Power Communication Device Transmitter | Original Equipment |
app s | Applicant Information | |||||
---|---|---|---|---|---|---|
1 | Effective |
2002-04-16
|
||||
1 | Applicant's complete, legal business name |
KROHNE, Inc
|
||||
1 | FCC Registration Number (FRN) |
0006798664
|
||||
1 | Physical Address |
55 Cherry Hill Drive
|
||||
1 |
Beverly, Massachusetts 01915
|
|||||
1 |
United States
|
|||||
app s | TCB Information | |||||
1 | TCB Application Email Address |
c******@curtis-straus.com
|
||||
1 | TCB Scope |
A2: Low Power Transmitters (except Spread Spectrum) and radar detectors operating above 1 GHz
|
||||
app s | FCC ID | |||||
1 | Grantee Code |
JH5
|
||||
1 | Equipment Product Code |
70
|
||||
app s | Person at the applicant's address to receive grant or for contact | |||||
1 | Name |
R**** S******
|
||||
1 | Telephone Number |
978-5******** Extension:
|
||||
1 | Fax Number |
978-5********
|
||||
1 |
r******@krohne.com
|
|||||
app s | Technical Contact | |||||
n/a | ||||||
app s | Non Technical Contact | |||||
n/a | ||||||
app s | Confidentiality (long or short term) | |||||
1 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
1 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
1 | Is this application for software defined/cognitive radio authorization? | No | ||||
1 | Equipment Class | DXX - Part 15 Low Power Communication Device Transmitter | ||||
1 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | Level Radar | ||||
1 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
1 | Modular Equipment Type | Does not apply | ||||
1 | Purpose / Application is for | Original Equipment | ||||
1 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | No | ||||
1 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
1 | Grant Comments | Grant waiver dated October 26, 2001 applies to this device. Under the terms of this waiver this device must be installed in a steel tank and a report must be submitted by the grantee annually to the National Telecommunications and Information Agency (NTIA) identifying the geographic locations where this device has been installed during the previous year. | ||||
1 | Is there an equipment authorization waiver associated with this application? | No | ||||
1 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
app s | Test Firm Name and Contact Information | |||||
1 | Firm Name |
Curtis-Straus LLC
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1 | Name |
J****** S******
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1 | Telephone Number |
978-4********
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1 | Fax Number |
978-4********
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1 |
J******@us.bureauveritas.com
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Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
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Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
1 | 1 | 15C | 8500.00000000 | 9500.00000000 |
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC