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Diagnostics of impulse piping in an industrial process

  • US 7,523,667 B2
  • Filed: 12/23/2003
  • Issued: 04/28/2009
  • Est. Priority Date: 12/23/2003
  • Status: Expired due to Term
First Claim
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1. A process variable transmitter for sensing a process variable of an industrial process, comprising:

  • a process variable sensor configured to sense the process variable;

    an impulse piping line configured to couple the process variable sensor to a process fluid of an industrial process;

    a vibration signal source configured to transmit an acoustic vibration signal into the industrial process and through the impulse piping line, the acoustic vibration signal having an acoustic signature, the vibration signal source providing the acoustic vibration signal in response to an input;

    a vibration signal receiver acoustically coupled to the impulse piping configured to receive the vibration signal from the impulse piping line wherein the vibration signal is generated by the vibration signal source; and

    diagnostic circuitry configured to provide the input to the vibration signal source and responsively diagnose condition of the impulse piping line based upon the received vibration signal.

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