Wireless Sensor RT2e Operation Manual Wireless Sensor RT2e EL6107E 2 - EN Wireless Sensor RT2e EL6107E EN EN FR IT IT ES ES Table of Contents 3.1 1. Product description .........................................................................................5 2. General application and safety information...................................6 2.1 Antenna position .....................................................................................................6 2.2 Temperature effect .................................................................................................6 2.3 Exceptional environmental conditions ....................................................................6 2.4 Precautionary measures for handling units containing lithium batteries.................7 3. Wireless Sensor RT2e ....................................................................................8 Initial startup ...........................................................................................................8 3.1.1 Transmitted frequency & radio channel.................................................8 3.2 Operation ................................................................................................................9 3.3 Maintenance ...........................................................................................................9 4. Status and error messages ......................................................................10 5. Technical data ....................................................................................................11 5.1 Radio settings .......................................................................................................11 5.2 Environment.........................................................................................................12 5.3 Wireless Sensor RT2e - 2 external temperature sensors.....................................12 5.4 Part no. System & Accessories ............................................................................13 Wireless Sensor RT2e........................................................................13 5.4.1 Accessories .........................................................................................13 5.4.2 5.5 Label Locations.....................................................................................................14 5.6 Dimensional drawing ............................................................................................15 6. Approvals ..............................................................................................................16 6.1 ETSI......................................................................................................................16 6.2 Wireless Communication reliability .......................................................................16 6.3 FCC ......................................................................................................................17 6.4 INDUSTRY CANADA ...........................................................................................18 6.5 Conclusion ............................................................................................................18 Index ...................................................................................................................................20 Wireless Sensor RT2e EL6107E EN - 3 Symbols and description codes used Information IMPORTANT INFORMATION AND WARNINGS Reference to related chapter or document CHANGES OR MODIFICATIONS MADE TO THIS EQUIPMENT MAY VOID THE ETSI / FCC AUTHORIZATION TO OPERATE THIS EQUIPMENT. THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES AND WITH RSS-210 OF INDUSTRY CANADA. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:
(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE.
(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.
- This product is subject to CE marking.
- The manufacturer guarantees that this product complies with the relevant guidelines: EN 61000-6-2 : 2001 and EN 61000-6-4 : 2001 IC: 9954A-E11645398
- FCC ID: Z45-E11645398
- This product must be disposed of in accordance with WEEE (Waste electrical and electronic equipment, 2002/96/EC)!
In the interest of our customers, we reserve the right to make changes due to ongoing technical development. As a result, images, descriptions and scope of delivery are not binding! The release of this document is available on the printed and archived original only. This manual is valid for firmware version 1.02 elproLOG ANALYZE 3.63 4 - EN Wireless Sensor RT2e EL6107E Product description 1. Product description The Wireless Sensor RT2e works autonomously and is supplied with power via internal batteries. On the front side there is a status display (green/red LED) and a type label which documents the wireless sensor designation and the ID number of the sensor. A wireless sensor can be connected with up to 2 sensing devices. 1.Aerial 2.Status display 3.2 Operation 3.Type label with ID numbers 4.3 batteries for the types inside the wireless sensor 5.Sensors EN EN FR IT IT ES ES Wireless Sensor RT2e EL6107E EN - 5 General application and safety information 2. General application and safety information 2.1 Antenna position Range approx. 1000m In which direction should the antenna point?
The range (always dependent upon the structural conditions of the building such as cement ceilings, water pipes etc.) is approx. 100m in a typical office environment 5.1 Radio settings. With this type of antenna, the signal is emitted at right angles from the antenna. The direction can be visualized as being like a CD that is skewered on the antenna. This makes it clear that it is best for the antenna to be placed vertically, pointing upward, so that it transmits to all rooms on the same floor. If the antenna is placed horizontally, reception is best on the floors above and below. Metal objects such as shelves, reinforced concrete walls, ventilation and energy shafts, but also the opening of a refrigerator door can lead to the weakening of the signal. This kind of effect is usually very much limited to the location. Moving the wireless sensor within an area of 2.5 meters (sometimes just a few centimeters) is usually adequate to completely change the reception ( 3.1.1 Transmitted frequency & radio channel). Move the wireless sensor forward, backward, up and down within this area. The wireless sensor should always be mounted at least 1.5m above the ground. If no direct line of sight to the wireless sensor is available, the angular position (angle in relation to the horizontal axis and rotation of direction) can improve reception. Placing the wireless sensors in an open stairwell is an additional possibility to avoid one or more reinforced steel ceilings that are an obstacle. For additional details regarding the antennas 5.1 Radio settings 2.2 Temperature effect
- For the range of application,5. Technical data. It can't be guaranteed that the loggers will function properly if the datalogger is exposed to
temperatures which exceed the specified threshold range. Experience shows that at storage temperatures below -50C, the battery freezes, measurements are no longer taken and setpoint tracking may be temporarily interrupted. Once it has been returned to room temperature, the logger must be reprogrammed before it can be used again.
- At temperatures below - 20C, the display is not easily readable; however, longterm use is not affected.
- For longterm use above 40C, lithium battery passivation can lead to temporary reading problems
(self-discharge protection), which can be resolved with repeated utilization.
- At temperatures above 45C, battery self-discharging increases. With long term use above 45C, the battery lifetime can be reduced by about 1/3.
- Exposure to temperatures above 55C can result in permanent discoloration of the display.
- There is danger of a gas explosion if the lithium battery is heated to temperatures exceeding 100C. 2.3 Exceptional environmental conditions Pay attention to the following when using the wireless sensor in exceptional environmental conditions:
IR radiation (heat) and superheated steam can damage the surface coating of the casing
- There is a risk that the battery may explode if the logger is used under microwave radiation Initial startup THE WIRELESS SENSOR MUST BE AT ROOM TEMPERATURE BEFORE INITIAL STARTUP!
6 - EN Wireless Sensor RT2e EL6107E General application and safety information 2.4 Precautionary measures for handling units containing lithium batteries
- Do not short-circuit and charge batteries: Explosion hazard Lithium batteries
- Do not throw units which contain batteries into fire: Explosion hazard
- Do not subject batteries to mechanical stress and do not dismantle them as leaking battery fluid is highly corrosive and lithium can generate severe heat or can ignite a fire if it comes into contact with moisture.
- Do not heat battery operated units to temperatures exceeding 100C: Explosion hazard
- Avoid excessive impact
- Follow the manufacturer specifications for storing batteries
- Return batteries to the supplier for correct waste disposal EN EN FR IT IT ES ES Wireless Sensor RT2e EL6107E EN - 7 Wireless Sensor RT2e 3. Wireless Sensor RT2e RT2e 2 external PT100 temperature sensors The external PT100 sensors can be used with 3- or 4-wire connections. 3.1 Initial startup The wireless sensor casing contains various operating equipment, 3 batteries and the sensor connections. Technical data and the assignment of terminals in the :SENSORS" field 5.3 Wireless Sensor RT2e
- 2 external temperature sensors. Batteries The wireless sensor uses 3 lithium 3.6V batteries. The battery capacity is sufficient for operation time of 2 - 3 years. Replacement batteries 5.4.2 Accessories BATTERY ERROR This LED lights up red when the battery is inserted incorrectly. SET key The battery counter is reset by pressing and holding the SET key (6 seconds). Transmitted frequency & radio channel 3.1.1 The frequency band setting is factory hard-wired. The set frequency band is marked on the top side of the pcb during manufacturing. The radio channel used is defined using the positions of the internal rotary switch. Appropriate antennas are to be used. SET key By quickly pressing the SET key (1 second), the settings are acknowledged and the test of the radio connection is started. The test lasts approx. 2 seconds. The test result is represented by repeated color blinking in the status display at a rate of 1 per second. 8 - EN Wireless Sensor RT2e EL6107E Wireless Sensor RT2e Status display - test result Quality of the radio connection good radio connection poor radio connection No radio connection or wrong settings*
100%
80%
60%
40%
20%
Blinks, number Color green 5 green 4 3 green green 2 green 1 1 red In the event of a poor test result, shifting the wireless sensor can lead to an improvement in the radio connection 2.1 Antenna position. If no radio connection can be established, the channel settings should be checked. If the radio channel needs to be changed during operation, it is necessary to briefly press the SET key after selecting the new channel. 3.2 Operation Undisrupted operation is indicated by a green, blinking light of the status indicator at intervals of 10 seconds. Status indicator - Operation Quality of the radio connection good radio connection No radio connection or wrong settings*
Blinks, number Color green 1 1 red EN EN Radio channel change FR IT IT Status indicator ES ES 3.3 Maintenance To ensure proper functioning of the wireless sensor, the following steps should be part of a periodic maintenance schedule:
Maintenance schedule
- Calibrate wireless sensor
- Replace batteries 5.4.2 Accessories Monitoring of the battery is based on an energy consumption count. For this reason, only the specific manufacturer recommended battery should be used. Do not remove the battery from the wireless sensor when it is not in use. The use of third party batteries or removal of batteries will produce incorrect status information at the battery indicator. Replacing battery AFTER THE BATTERIES ARE CHANGED, THE SET KEY MUST BE PRESSED AND HELD FOR 6 SECONDS, OTHERWISE THE ENERGY COUNTER WILL NOT FUNCTION Wireless Sensor RT2e EL6107E EN - 9 Status and error messages 4. Status and error messages Operation Failure Connection test In the housing:
BATTERY ERROR Blinks green at an interval of 10 seconds The interruption of the radio connection is indicated by a red blinking light at an interval of 10 seconds. Reestablishing the radio connection can take up to 1 minute. Blinks green / red 3.1.1 Transmitted frequency & radio channel This LED lights up red when if one of batteries is inserted incorrectly. 10 - EN Wireless Sensor RT2e EL6107E 5. Technical data 5.1 Radio settings Channel Technical data FCC (MHz) Color coding of the aerial yellow 0 - F 915 External, omnidirectional 1/4 wavelengths Synthetic whip RP-SMA connection The range is approximately 1000m in open areas and with line of sight Aerial EN EN FR IT IT Frequency band (MHz) Signal weakening at a distance of:
10m dB 51.5 100m dB 71.5 Factor 380 Factor 3800 915 Signal weakening in air ES ES This example makes the dramatic relation between free space damping and transmission frequency very clear. The damping factor for solid materials is 4 - 6 times higher than the factor for free space damping (air). Wireless Sensor RT2e EL6107E EN - 11 Technical data 5.2 Environment Ambient temperature Protective class external power supply UB
-30C ...55C, non-condensing IP30 10 ...30VDC 24VDC; up to 1.6A startup current, 70mA operation 5.3 Wireless Sensor RT2e - 2 external temperature sensors Ambient temperature Protective clase Power supply / operating time Measurement range /
sensors Accuracy
(without sensor) Length sensor cable
-30C ...55C, non-condensing IP54 3 internal lithium batteries / 2-3 years
-200C ...200C / PT100 25.1C ...200.0C
-10.0C ...25.0C
-200.0C ...-10.1C max. 20m
+/- 0.50C
+/- 0.30C
+/- 0.50C Sensor connection The terminal assignment for the PT100 sensors is presented in the adjacent figure. PT100 sensors with 3 or 4 leads can be used. Connection cables In order to guarantee that the sensor cable has good contact, the lead ends should have between 8.5 -
9.5mm of the insulation stripped 12 - EN Wireless Sensor RT2e EL6107E 5.4 Part no. System & Accessories 5.4.1 Part no. 3454-US 5.4.2 Part no. 2760-US 31xx-xx 2820-A Wireless Sensor RT2e Function RT2e wireless sensor - 2 x external temperature Accessories Name Aerial 915 MHz band FCC, yellow Included in scope of delivery Diverse PT100 sensors Replacement battery, can be stored for at least 5 years, for wireless sensor Technical data EN EN FR IT IT ES ES Wireless Sensor RT2e EL6107E EN - 13 Technical data 5.5 Label Locations 14 - EN Wireless Sensor RT2e EL6107E 5.6 Dimensional drawing Technical data EN EN FR IT IT ES ES Wireless Sensor RT2e EL6107E EN - 15 Approvals 6. Approvals 6.1 ETSI The standards used in the evaluation of this product establish the threshold values for use in residential areas, business and commercial areas as well as in small businesses whereby the use of the product is intended for a business environment. This includes the following, typical sites and spaces:
- Residential buildings/living spaces such as houses, apartments and rooms, etc.;
- Retail areas such as stores, supermarkets, etc.;
- Business premises such as municipal offices, banks, etc..;
- Entertainment businesses such as cinemas, public establishments, etc.;
- Outdoor locations such as gas stations, parking lots, sports facilities, etc.;
- Small business offices such as workshops, service centers, etc. All areas of application are characterized by the fact that they are connected to the public low-voltage power supply. When using in a location in a severely electromagnetically disrupted environment such as typical industry environments, problems are likely to occur as a result of the product's inadequate interference immunity. R&TTE Guideline 99/5/EG EN 300 220-1 V2.1.1 (2006-04) EN 60950-1 (2006-11) EN 300 220-2 V2.1.2 (2007-06) EN 301 489-1 V1.8.1 (2008-04) EN 301 489-3 V1.4.1 (2002-08) EMV Guideline 2004/108/EG EN 55022 (2008-05) EN 50130-4 (2003-09) EN 50371 (2002-11) Low Voltage Directive 2006/95/EG EN 60650-1 (2006-11) EN 61000-6-1 (2007-10) EN 61000-6-3 (2007-09) 6.2 Wireless Communication reliability The communication reliability for the Elpro radio sensor system, often referred to as Quality of service
(QoS) is based on the following principles:
"The used modulation is of the "Gaussian Frequency-Shift Keying (GFSK)" type. This is a type of frequency shift keying modulation that uses a Gaussian filter to smooth positive/negative frequency deviations:
- FCC compatible
- Address match for detection of incoming package
- Automatic retransmission of data packages
- Automatic CRC and preamble generation
- Build in test function for the radio signal
- Use of frequency hopping in the 915MHz band
- Limited number of sensors and transmitters used
Installation requirements Risk assessment for Receivers and Transmitters The Elpro wireless system is made up of a receiver and a transmitter function in the wireless datalogger and in each radio sensor. The receivers are divided into three classes, each having its own set of minimum performance criteria. The classification is based upon the impact the equipment has on persons in case of a failure. The Elpro radio sensor system complies to a class 2 system:
A failure causes loss of function but not physical risk of a person 16 - EN Wireless Sensor RT2e EL6107E Approvals 6.3 FCC In the USA, the FCC (Federal Communications Commission) regulates the use of frequencies for RF equipment. CFR 47 part 15 (Code of Federal Regulations) covers the unlicensed ISM bands. This is usually referred to as FCC part 15. All equipment must be certified with the FCC with the issuance of a Grant of Authorization by the FCC. When the product is approved, the FCC issues an identification number which the product must be marked with. The part 15 sections for ISM band radios are:
- 15.19 / RSS-210: Manual requirements
- 15.35: General rules for certification measurements
- 15.105: Manual requirements
- 15.109: Radiated emission limits for unintentional radiators
- 15.205: Restricted bands of operation
- 15.209: Radiation limits for intentional radiators
- 15.247: Frequency Hopping and Spread Spectrum (FHSS), operation within the bands 902 - 928MHz, 2400 - 2483.5 MHz A large part of the FCC Part 15 is about the limit of spurious emissions (harmonic component) and restricted bands. The main concept behind part 15 is that a general set of rules must be followed, but with exceptions for different application and frequency bands. Emissions are divided into two parts:
Spurious emissions and restricted bands
- Unintended radiators, like receivers and transmitters in standby or other radiators requirements are given in 15.109 Intended radiators, like active transmitters requirements are given in 15.209
There are a number of restricted frequencies according to 15.205 which cannot be used for active transmissions, but spurious emissions can be produced. The levels are given in EIRP, Electrical Field Strength Power, at a distance of 3 meters Frequency 216-960MHz Electrical Field Strength EIRP 200mV/m
-49.2dBm 915MHz band Section 15.249 gives the opportunity to use the 902-928MHz band with an output power of 50mV/m at 3 meters or -1.2dBm. The harmonics are limited to 500uV/m or -41.2dBm. This band is commonly referred to as the 915MHz band in the USA. There are no restrictions on duty cycle or the application. Even higher output power can be used according to section 15.247. This implies the use of frequency hopping. The following requirements must be fulfilled for the use of the 902-928MHz band under section 15.247:
White Paper EN EN FR IT IT ES ES
- Hopping channels shall be separated by minimum 25 kHz or the 20dB bandwidth of the hopping channel, whichever is greater.
- The system shall hop to channel frequencies that are selected at the system hopping rate from a pseudorandomly ordered list of hopping frequencies. If the 20 dB bandwidth of the hopping channel is less than 250 kHz, the system shall use at least 50 hopping frequencies and the average time of occupancy on any frequency shall not be greater than 0.4 seconds within a 20 second period. If the 20 dB bandwidth of the hopping channel is 250 kHz or greater, the system shall use at least 25 hopping frequencies and the average time of occupancy on any frequency shall not be greater than 0.4 seconds within a 10 second period.
- The maximum allowed 20 dB bandwidth of the hopping channel is 500 kHz.
- Maximum peak conducted output power is 1W in the 902-928MHz band if more than 50 hopping channels are used. The limit is 0.125W for 25 to 50 hopping channels. Wireless Sensor RT2e EL6107E EN - 17 Approvals FCC STATEMENT This product has been tested and complies with the specifications for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which is found by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver
- Connect the equipment to an outlet other than the receiver's
- Consult a dealer or an experienced radio/TV technician for assistance Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. 6.4 INDUSTRY CANADA This Class B digital apparatus complies with Canadian ICES-003, RSS210. The use of this device in a system operating either partially or completely outdoors may require the user to obtain a license for the system according to the Canadian regulations. 6.5 Conclusion The data transfer between wireless dataloggers and radio sensors could be seen as a safe way to exchange data. This conclusion is valid as long as the wireless datalogger system is secured against any kind of fraud from the inside or outside of the company. This security task has to be fulfilled by the company internal IT department or other related departments. Further information More information regarding rules and requirements are found at:
http://www.fcc.gov ETSI standards are found at:
http://www.etsi.org The CEPT/ERC rec 70-03 are found at:
http://www.ero.dk The ARIB STD-T66 regulation is found at:
http://www.arib.or.jp/english/index.html The Australian/New Zealand Standard AS/NZS 4268:2003 are found at:
http://www.standards.org.au 18 - EN Wireless Sensor RT2e EL6107E Approvals EN EN FR IT IT ES ES Wireless Sensor RT2e EL6107E EN - 19 Revision History Author A. Gubler Date 26.06.2012 Version Description
First edition EN EN FR IT IT ES ES Wireless Sensor RT2e EL6107E EN - 20 Index Numerics 3 / 4 wires 12 A Accuracy 12 Aerial 8, 11 Ambient temperature 12 B Batteries 8, 9 Battery counter 8 BATTERY ERROR 8, 10 C Channel 11 E Environmental conditions 6 Error messages 10 ETSI 16 F FCC 17 I ID number 5 Initial startup 6 M Maintenance schedule 9 Measurement range 12 P Power supply 12 Precautionary measures 7 Protection class 12 PT100 8 PT100 2/3 lead 12 R Radio channel 8 Radio connection 8 Replacing battery 9 S Sensor cable 12 Sensor connection 12 SET key 8 Signal weakening 11 Special environmental conditions 6 Status indicator 8, 9 T Temperature influence 6 21 - EN Wireless Sensor RT2e EL6107E
(Head Office) ELPRO-BUCHS AG Langulistrasse 62 CH-9470 Buchs SG Switzerland email: swiss@elpro.com For local representatives see:
www.elpro.com www.pdf-datalogger.com Operation Manual Wireless Sensor RT2e EL6107E 08.2012