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In-Line Amplifier for Strain Gauge Sensors
© 2005 burster
präzisionsmeßtechnik gmbh & co kg
All rights reserved
Edition 22.04.2005
Note:
The following information may be amended without prior notice. No part of this document may be
reproduced or processed using electronic systems without prior consent in writing.
burster provides no warranty of any kind with respect to this material, including the implied warranty
of merchantable quality and fitness for purpose.
burster is not liable under any circumstances for errors, incidental damage or consequential loss
sustained in connection with the function or use of this material.
In-Line-Amplifier for
Strain Gauge Sensors
Model 9235
Manufacturer:
burster präzisionsmeßtechnik gmbh & co kg
Talstraße 1 - 5
76593 Gernsbach
Model 9235
PO Box 1432
76587 Gernsbach
Page 1
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Summary of Contents for Burster 9235
- Page 1 The following information may be amended without prior notice. No part of this document may be reproduced or processed using electronic systems without prior consent in writing. burster provides no warranty of any kind with respect to this material, including the implied warranty of merchantable quality and fitness for purpose.
- Page 2 In-Line Amplifier for Strain Gauge Sensors Model 9235 Page 2...
- Page 3 In-Line Amplifier for Strain Gauge Sensors Model 9235 Page 3...
- Page 4 In-Line Amplifier for Strain Gauge Sensors Model 9235 Page 4...
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Page 5: Table Of Contents
In-Line Amplifier for Strain Gauge Sensors Model 9235 Table of contents Page General Information Safety information................... 7 Application ....................9 Description....................9 Preparations for operation ................11 Unpcking of device ................11 Initial operation ..................11 Supply voltage ..................11 Pin assignment .................. - Page 6 In-Line Amplifier for Strain Gauge Sensors Model 9235 Page Calibration and adjustment of the instrument ..........19 With physical values ................19 With prescision voltage source ..............19 With strain gage simulator ............... 20 With calibration step ................20 Maintenance and customer service ..............21 Maintenance ....................
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Page 7: General Information
In-Line Amplifier for Strain Gauge Sensors Model 9235 1. General Information 1.1. Safety information READ THE INSTRUCTION MANUAL CAREFULLY PRIOR TO USING THE INSTRUMENT ! Attention To reduce the danger of fire and electrical shock, rain and other humidity should be avoided. - Page 8 In-Line Amplifier for Strain Gauge Sensors Model 9235 Aufstellung • Assure a sufficient airflow so that excessive heat inside the device is avoided. • Do not place the instrument on surfaces such as carpets or blankets or near materials such as curtains or wall textiles that could hinder the air circulation.
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Page 9: Application
In-Line Amplifier for Strain Gauge Sensors Model 9235 Applikation In practical applications it oftentimes becomes necessary to transform the measuring signal of a sensor in the most simple way to a standard signal in the sensor’s nearby environment. This makes a transfer of the measurement values to the central metrology department or the system’s control easily possible over larger distances... - Page 10 In-Line Amplifier for Strain Gauge Sensors Model 9235 Device features CE-sign Input and Output protection for all measuring leads and energy lines Wide input voltage range, protected against polarity reversal 10 V – voltage output 3 sensor values configurable Strain gage bridge circuits 350 Ω to 5 kΩ...
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Page 11: Preparations For Operation
The packing shall be kept for checking by the representative or the forwarding agent in such a case. The transport of 9235 can only be effected in the original packing or a packing of similar quality. -
Page 12: Version With Clamps
The shield may also be connected with pin 3 from socket and bushing. As a result, the shield would be on the function ground of model 9235. The potential bondings of the electronics connected in the measurement chain have to be respected. -
Page 13: Grounding And Potential Bonding
Optionally, the cable shields can be connected to the clamps 3 of socket and plug. The shields are then linked to function ground of model 9235. The potential bondings of the process instruments in the measuring chain have to be respected. -
Page 14: Checking / Calibration Interval
In-Line Amplifier for Strain Gauge Sensors Model 9235 2.7. Checking / Calibration interval The equipment should be test after approximately 2-3 years by the manufacturer. This interval can be enormous extented, if the instrumentation charakteristics are not fully used. Mounting It is recommended that the device is not mounted in close proximity to guards or similar installations or components that can cause electromagnetic fields. -
Page 15: Operation Elements
In-Line Amplifier for Strain Gauge Sensors Model 9235 3. Operation elements Side wall Two borings can be found on the side wall through which the potentiometer for fine tuning of zero point and amplification can be reached. Through the boring in the top the switch for setting of the nominal sensitivity can be reached. - Page 16 In-Line Amplifier for Strain Gauge Sensors Model 9235 Page 16...
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Page 17: Operation
In-Line Amplifier for Strain Gauge Sensors Model 9235 4. Operation Switch on after storage or blackout The device is switched on by applying the supply voltage. Warm-up time approx. 10 min. If the supply voltage is switched off during a running measurement the device would continue the measurement after the energy is switched back on. -
Page 18: Sensivity
In-Line Amplifier for Strain Gauge Sensors Model 9235 Sensitivity The nominal sensitivity can be chosen via the slide switch. Nominal Switch 1 Switch 2 Range of sensitivity dowen sensitivity low .. high mV/V mV/V zu (rechts) zu (rechts) 0.8 ...1.3... -
Page 19: Calibration And Adjustment Of The Instrument
In-Line Amplifier for Strain Gauge Sensors Model 9235 5. Calibration and adjustment of the instrument With physical values Application On all sensors. Function Example balance: The zero point is adjusted on the unburdened balance. Then the balance is burdened with the known refrerence weight and the end value is set. -
Page 20: With Strain Gage Simulator
In-Line Amplifier for Strain Gauge Sensors Model 9235 With strain gage simulator Application On strain gage bridge circuit sensors. Function A strain gage simulator can be seen as a bridge circuit consisting of precision resistors which can e.g. simulate the basic settings Zero and 100 % . The strain gage simulator is connected to replace the sensor. -
Page 21: Maintenance And Customer Service
In-Line Amplifier for Strain Gauge Sensors Model 9235 6. Maintenance and customer service Maintenance The in-line-amplifier model 9235 is generally maintenance-free from the view of the user. If repair services become necessary they should be effected only by the manufacturer. Customer service... - Page 22 In-Line Amplifier for Strain Gauge Sensors Model 9235 Page 22...
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Page 23: Technical Data
In-Line Amplifier for Strain Gauge Sensors Model 9235 7. Technical data Measurement specifications strain gage 350 Ω to 5 kΩ Connectable sensors: Switch technology: 4-wire (no sense lines) Therefore no function with ex-barriers! Configurable sensitivity: 1 / 1.5 / 2 mV/V 2.5 V ±... - Page 24 In-Line Amplifier for Strain Gauge Sensors Model 9235 Page 24...
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Page 25: Appendix
In-Line Amplifier for Strain Gauge Sensors Model 9235 8. Appendix Setting of malfunction The causes for the most frequent malfunctions of measurement are listed in the following error list. 8.1.1 Extension cable Wrong pin assigment. Cable shield not continued into extension cable. - Page 26 In-Line Amplifier for Strain Gauge Sensors Model 9235 Surface specs.: The sensor must be placed on a hardened and grinded surface (acc. 1.2842, 1.2379). No bores, no cenctrical bores for lathes, no snuffs are allowed. Introduction of force: The introduction parts for force shall also feature 63 HRC. No bores, no centrical bores for lathes, no snuffs are allowed.
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Page 27: Default Settings
In-Line Amplifier for Strain Gauge Sensors Model 9235 Default settings These default settings describe the standard status of the instrument when it leaves the factory. Sensor / Input: 2.5 V ± 0.1 % Sensor supply voltage Sensitivity: 1.5 mV/V Analog output:... -
Page 28: Sample -Eg-Conformity Declaration
-EG Conformity declaration- It is confirmed for the following product. In-line-amplifier model 9235 – only the complete instrument!!! That the main protection requirements of the guideline 89/336/EWG for assimiliation of laws and regulations on electromagnetic compatibility, issued by the European Commission, are fulfilled. -
Page 29: Sample -Confirmation Acc. To The Device Safety Law
Model Model 9235 Manufacturer burster präzisionsmesstechnik gmbh & co kg Talstr. 1-5. 76593 Gernsbach Germany We, the manufacturer, hereby confirm that the operating material was built and checked in accordance to the safety-relevant requirements of the device safety law and the accident prevention regulations of the German commercial employer’s liability insurance association.
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