High integrity process fluid pressure probe

  • US 9,841,338 B2
  • Filed: 08/30/2016
  • Issued: 12/12/2017
  • Est. Priority Date: 06/28/2013
  • Status: Active Grant
First Claim
Patent Images

1. A process fluid pressure measurement probe comprising:

  • a flange mountable to a process fluid conduit and having an aperture therethrough;

    an inner conduit having a pair of ends, a first end being welded to the flange;

    an outer conduit having a pair of ends, a first end being welded to the flange;

    an isolator plug welded to a second end of the inner conduit and to a second end of the outer conduit, the isolator plug having a passageway therethrough;

    an isolation diaphragm welded to the isolator plug, the isolation diaphragm being adapted for exposure to a process fluid;

    a pressure sensor module welded to the isolator plug, the pressure sensor module defining a chamber therein and having a conduit in fluidic communication with the passageway of the isolator plug;

    a pressure sensor mounted within the chamber, the pressure sensor having an electrical characteristic that varies with process fluid pressure;

    a fill fluid surrounding the pressure sensor within the chamber, the fill fluid coupling pressure from the isolation diaphragm to the pressure sensor;

    a plurality of leads coupled to the pressure sensor an extending therefrom through the aperture of the flange and being coupleable to a process pressure transmitter.

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