INSTRUCTION MANUAL SML-WME Instruction Manual forwireless Magnet Extensometer SML-WMEH 1 Description 1.1 The Magnet-Strain Sensors Type SML-WME are latest generation wireless extensometers with two integrated super magnets to measure the bending compensated tie bar elongation and/or load (Load: if 2 sensors are used on one tie bar). The improved design does not only make the sensor shorter, but also increases the absolute accuracy. Therefore all the sensors are used in pair. This makes the measurement and check of the following parameters even easier:
Tie Bar Load Distribution Clamping Force Measurement Elongation and strain measurement on any flat surface (e.g. mould platen) Advantages of this system:
Very high accuracy: <1% absolute (like bonded strain gages) Safe against machine vibration and shock (like the strain rings) One system for all tie bar diameters Measures also reliable on flat surfaces 2 Sensors for bending compensated measurements Quick & easy mounting Digital Monitor with direct Force/Load/ display (kN / ton/) Comes in carrying case with 8 or 9 & 10 Sensors Light and handy case SENSORMATE Technology Inc. 6f., No.5, Ln.83, Sec.1, Guangfu Rd., Sanchong Dist., New Taipei City 241, Taiwan http://www.sensormate.com E-mail : sales@sensormate.com TEL : +886 2 2999 5245 FAX : +886 2 2995 0782 2 Instruction Manual forwireless Magnet Extensometer SML-WMEH 1.2 Technology:
The Sensor SML-WME is based on pressed-on strain gauges . This successful technology is used in many products for the molding industry. The pressed on strain gage is placed under a stainless steel foil between the two magnets. The strong magnets press the strain gage that strong onto the surface of the tie bar that friction occurs between the strain gage, the foil and the tie bar. This friction replaces the usually used strain gage adhesive that means easier application with the same results, but without bonding. Finally this technology allows highly accurate tie bar elongation measurement with fast and reliable mounting. The sensors are basically magnet mounted and reusable strain gages which measure strain on cylinders or flat surfaces. 2. TECHNICAL DATA
(FS = Full Scale = max. measuring range; Threshold= min. reaction of mechanical unit, accuracy = combined error of linearity & hysteresis) 2.1 Sensor
-Measuring range +/-800
-Accuracy %FS <1%
- Dimension (LxWxH) mm 88x46.5x50
-Temperature range ideal C 10...30
-Temperature range compensated C 10...60
-Bridge resistance @ 23 C 350
- Reference temperature C 23
-Measuring base (Strain gage-Type) mm 7.9 x 4.8
-Magnet force typ. N 2 x 240
-Frequency range Hz 2.4G
- Power supply VDC 2 x AA NiMH rechargeable SENSORMATE Technology Inc. 6f., No.5, Ln.83, Sec.1, Guangfu Rd., Sanchong Dist., New Taipei City 241, Taiwan http://www.sensormate.com E-mail : sales@sensormate.com TEL : +886 2 2999 5245 FAX : +886 2 2995 0782 3 Instruction Manual forwireless Magnet Extensometer SML-WMEH 2. Instructions SML-WME sensor with battery housing outline Batteries in housing IMPORTANT:
This sensors are sensitive measuring resolution of 0.001mm .Handle this instruments with the respective care.. These instructions shall be read carefully by any user prior to application. Mounting of the magnet sensors 2.1 Preparation:
instruments with a 3 1 2
. 1. Zigbee 2. Adjust Nut 3. Battery box Clean the mounting spot from oil, loose parts, paint and other parts on the surface The area where the foil is being placed must be smooth that the foil will not be damaged. All sensors have to match used. ex. 1A+1B, 2A+2B, 3A+3B, 4A+4B 2.2 Installation:
Set the sensor carefully onto the tie bar at a location where another sensor can be set 180 opposite. (Important: position should be at least 1 times diameter away from the fixed platen = homogeneous strain distribution is guaranteed for comparable results). 2.3 The magnets hold the sensor already on the surface. This allows easy shifting until the sensor can be installed at the desired location. 2.4 CHECK:
The sensor shall not move if you try to shake it slightly. The machined edges of the magnet need to be in contact with the tie bar on the whole length. 2.5 Now it is time to mount the second sensor opposite on the tie bar
(see picture A.)The sensors can be mounted in any angle but in any case opposite. SENSORMATE Technology Inc. 6f., No.5, Ln.83, Sec.1, Guangfu Rd., Sanchong Dist., New Taipei City 241, Taiwan http://www.sensormate.com E-mail : sales@sensormate.com TEL : +886 2 2999 5245 FAX : +886 2 2995 0782 4 Instruction Manual forwireless Magnet Extensometer SML-WMEH Remark: Only when two sensors are >8 off the correct opposite position, then we get an error >1% of the measuring value!
* A picture A 3. Measuring of load distribution
(= load on each single tie bar) Procedure:
3.1 Place sensors 1A+1B, 2A+2B, 3A+3B, 4A+4B on each tie bar, all of the sensors , "A" and "B" should be define on upper side or lower side of tie bar. 3.2 Switch on all sensor "A" only, start running machine, the tablet each window will display strain value, this is tie bar bending direction strain value. 3.3 Switch off "A" and switch on "B", the same as above procedure, the monitor display value is tie bar the bending direction strain value. 3.4 Open and close the machine 2...4 times and press RESET between each cycle. The effective, precise measurement can take place as soon as ca. 1...3 digits Offset remain. The magnet sensors have now settled and are ready. 3.5 The displayed values are bending compensated, because the measuring values of the two opposite sensors are averaged at the input. The displayed microstrain () values are the tie bar elongation. Example: Display 355 = 0.355mm tie bar elongation per meter of tie bar With this value, the clamping force can be calculated. The new WMEH digital Monitor calculates by push-button directly kN or tons. The elongation shown is a superposition of load and bending. Very high differences of both values (e.g. <250 versus >700) can be an indication that the tie bar has started cracking. Theoretical display on how to measure the tie bar bending: One Sensor has no load. Make sure that this open sensor is not exposed to temperature variations. SENSORMATE Technology Inc. 6f., No.5, Ln.83, Sec.1, Guangfu Rd., Sanchong Dist., New Taipei City 241, Taiwan http://www.sensormate.com E-mail : sales@sensormate.com TEL : +886 2 2999 5245 FAX : +886 2 2995 0782 5 Instruction Manual forwireless Magnet Extensometer SML-WMEH 4. General hints:
Do not close the machine with highest speed, as this may cause offset because Compatibility: the WMEH is fully compatible (=generate the same signal) as of the strong vibration. bonded . 5. Calibration intervals:
This measuring instrument should be calibrated every 12 months. The sensors, monitors and cables should then be sent to the manufacturer. If the foil is damaged, or the 350 Ohm cannot be measured anymore, then the sensor has to be sent back for repair or overhaul and calibration. RECOMMENDATION: If the sensors are used heavily, then we recommend to purchase 1 or two sensors more then actually necessary. This assures that the system can still be used even if one sensor is out of order or currently at the factory for calibration. Thank you very much that you have chosen our products and services. We are improving our products continuously. If you have any hints for further improvements of our products, please contact us. FCC Federal Communications Commission (FCC) Statement 15.19 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 that may cause undesired operation of the device. 15.21 You are cautioned that changes or modifications not expressly approved by the part responsible for compliance could void the users authority to operate the equipment. 15.105(b) This equipment has been tested and found to comply with the limits for a Class B digital device, SENSORMATE Technology Inc. 6f., No.5, Ln.83, Sec.1, Guangfu Rd., Sanchong Dist., New Taipei City 241, Taiwan http://www.sensormate.com E-mail : sales@sensormate.com TEL : +886 2 2999 5245 FAX : +886 2 2995 0782 6 Instruction Manual forwireless Magnet Extensometer SML-WMEH 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 in accordance with 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 can be determined 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 into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help FCC RF Radiation Exposure Statement:
1. This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. 2. This equipment complies with RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and your body. SENSORMATE Technology Inc. 6f., No.5, Ln.83, Sec.1, Guangfu Rd., Sanchong Dist., New Taipei City 241, Taiwan http://www.sensormate.com E-mail : sales@sensormate.com TEL : +886 2 2999 5245 FAX : +886 2 2995 0782 7