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Independent-excitation cross-coupled differential-pressure transducer

  • US 6,581,468 B2
  • Filed: 03/22/2001
  • Issued: 06/24/2003
  • Est. Priority Date: 03/22/2001
  • Status: Expired due to Term
First Claim
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1. A pressure transducer comprising:

  • a first pressure sensor having a first sensitivity and excited by a first voltage;

    a second pressure sensor having a second sensitivity different from the first sensitivity and excited by a second voltage different from said first voltage, and wherein;

    the first and second voltages are independently adjustable to increase or decrease the sensitivities of the first and second sensors to substantially match each other;

    the outputs of the sensors are cross-coupled to each other to reduce the offset difference errors between the pressure sensors.

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