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Method and apparatus for the determination of absolute pressure and differential pressure therefrom

  • US 6,612,179 B1
  • Filed: 06/23/1999
  • Issued: 09/02/2003
  • Est. Priority Date: 06/23/1999
  • Status: Expired due to Term
First Claim
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1. A pressure measuring device comprising:

  • a first pressure transducer adapted to measure a first pressure and including a first plurality of piezoresistive devices;

    a second pressure transducer adapted to measure a second pressure and including a second plurality of piezoresistive devices; and

    , means for selectively coupling;

    a first set of said first plurality of piezoresistive devices to a first set of said second plurality of piezoresistive devices to measure a difference between said first and second pressures; and

    , said first set of said first plurality of piezoresistive devices to a second set of said second plurality of piezoresistive devices to measure a sum of said first and second pressures.

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