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      Burkert New Zealand Ltd.
      44 Rennie Drive, Airport Oaks
      Auckland 2022 New Zealand
      Phone +64 9 256 7737
      Fax +64 9 256 7747
      E-Mail fnyrf.am@ohexreg.pbz
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Piezoresistive sensor

Principle of piezoresistive sensor

For protective purposes, the piezoresistive sensor is flushed with a hydraulic fluid. The medium is separated by means of a stainless steel diaphragm. Flexure of the diaphragm as the result of the external pressure causes a change in the hydraulic pressure of the fluid around the piezoresistive sensor. The sensor emits a pressureproportional signal which is converted to a 4 - 20 mA output signal.
The measuring method is very wellsuited for the detection of low pressures and high overload factors can be achieved with it.

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