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PROCESS FLUID TEMPERATURE MEASUREMENT

  • US 20120051399A1
  • Filed: 08/26/2010
  • Published: 03/01/2012
  • Est. Priority Date: 08/26/2010
  • Status: Active Grant
First Claim
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1. An apparatus for measuring a temperature of a process fluid comprising:

  • a resistance based temperature sensor (RTD) sensor configuration to thermally couple to the process fluid;

    first and second electrical connections configured to apply a current through an RTD;

    third and fourth electrical connections configured to measure a voltage across the RTD; and

    measurement circuitry configured to identify a degraded connection to the RTD and responsively measure a temperature of the process fluid using less than all of the first, second, third and fourth electrical connections, wherein the measurement circuitry is configured to measure the temperature of the process fluid during an occurrence of a degraded connection to the RTD.

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