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Prediction of error magnitude in a pressure transmitter

  • US 6,701,274 B1
  • Filed: 08/27/1999
  • Issued: 03/02/2004
  • Est. Priority Date: 08/27/1999
  • Status: Expired due to Term
First Claim
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1. A pressure transmitter, comprising:

  • a pressure sensor adapted to sense a process pressure;

    a controller coupled to the pressure sensor and generating a transmitter output representing the process pressure;

    memory storing predetermined data predicting magnitudes of transmitter output error as a function of cumulative excessive sensor output levels, and storing a record of cumulative excessive sensor output levels; and

    the controller calculating a predicted present magnitude of transmitter output error as a function of the accumulated record and the predetermined data, and generating a prediction output.

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