Introduction
9237B_002-552e-06.22 Seite 3
Content
1. Introduction...............................................................................................................................5
2. Important notes .........................................................................................................................6
2.1 For your safety.................................................................................................................6
2.2 Unpacking .......................................................................................................................6
2.3 Notes on using the transmitter ..........................................................................................7
2.4 Hints on using this instruction manual ...............................................................................7
3. General description....................................................................................................................8
3.1 What is strain? .................................................................................................................8
3.1.1 Normal strain – shear strain ..................................................................................8
3.2 What is the purpose of a strain sensor? .............................................................................9
3.3 Design and principle of operation of strain sensors Type 9237B... and 9232A… ................10
3.3.1 Design...............................................................................................................10
3.3.2 Measurement principle.......................................................................................11
3.3.3 Acceleration compensation of Type 9232A… ......................................................12
3.4 Factory calibration of sensors ..........................................................................................13
4. Installation and commissioning................................................................................................14
4.1 Important instructions.....................................................................................................14
4.2 Choosing measuring point ..............................................................................................14
4.2.1 Surface materials ............................................................................................................15
4.3 Allowing for thermal effects ............................................................................................16
4.4 Machining mounting surface...........................................................................................17
4.5 Mounting.......................................................................................................................19
4.5.1 Mounting strain sensor.......................................................................................19
4.5.2 Notes on cable laying .........................................................................................20
4.5.3 Cable concept....................................................................................................21
4.6 Commissioning...............................................................................................................21
4.6.1 Simplest form of measurement – relative.............................................................21
4.6.2 Simplest form of measurement – strain................................................................22
4.6.3 Indirect force measurement ................................................................................23
5. Calibration ..............................................................................................................................24
5.1 In-Situ calibration of surface strain sensor ........................................................................24
5.1.1 Working point calibration by peak value comparison ...........................................24
5.1.1.1 Test system requirements.....................................................................25
5.1.1.2 Reference sensor installation ................................................................25
5.1.1.3 Load application procedure..................................................................26
5.1.1.4 Calibration process worksheet..............................................................27
5.2 Kistler calibration service.................................................................................................28
6. Operation................................................................................................................................29
6.1 Quasistatic measurements ..............................................................................................29
6.2 Tips for good measurements...........................................................................................29
