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Differential pressure sensor for screw compressors

  • US 5,219,041 A
  • Filed: 06/02/1992
  • Issued: 06/15/1993
  • Est. Priority Date: 06/02/1992
  • Status: Expired due to Fees
First Claim
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1. A differential pressure sensing device for monitoring a pressure differential comprising:

  • a housing having a high pressure chamber;

    a nozzle on said housing having a low pressure chamber;

    a slidable diaphragm separating said high pressure chamber from said low pressure chamber;

    a first tension spring mounted in said high pressure chamber;

    a second tension spring mounted in said low pressure chamber;

    a magnet carrier disposed between said first and second tension springs, said magnet carrier connecting one of said first or second tension springs to said diaphragm;

    means in said device for connecting said high pressure chamber to a source of pressure;

    means in said device for connecting said low pressure chamber to a source of lower pressure; and

    means for sensing the axial position of said magnet carrier assembly.

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