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INDUSTRIAL PROCESS DEVICE UTILIZING PIEZOELECTRIC TRANSDUCER

  • US 20090260438A1
  • Filed: 04/22/2008
  • Published: 10/22/2009
  • Est. Priority Date: 04/22/2008
  • Status: Active Grant
First Claim
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1. A process device for coupling to an industrial process for use in monitoring or controlling the process, comprising:

  • a device housing configured to physically couple to the industrial process;

    a process variable sensor configured to measure a process variable;

    measurement circuitry coupled to the process variable sensor having an output related to the sensed process variable;

    a piezoelectric transducer having an electrical output related to pressure pulsations in the industrial process; and

    electrical circuitry in the housing having an input configured to receive the electrical output from the piezoelectric sensor, the electrical output used to provide power to the process device.

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