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Apparatus for coupling a transmitter to process fluid

  • US 5,920,016 A
  • Filed: 09/15/1997
  • Issued: 07/06/1999
  • Est. Priority Date: 06/13/1996
  • Status: Expired due to Term
First Claim
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1. A transmitter of the type used in the process control industry for sensing a process variable of a process fluid, the transmitter comprising:

  • a transmitter body having a sensor coupling;

    a sensor extension coupled to the sensor coupling, the sensor extension having a sensor coupling face and an opposing face opposite the sensor coupling face;

    a first flange interface having a process face which connects to the process and a sensor coupling face which mates with the sensor, the first flange interface including a passageway which couples the process fluid to the sensor coupling face;

    a second flange interface positioned adjacent the opposing face of the sensor extension whereby the sensor extension is positioned between the first and second flange interfaces; and

    a shut off valve coupled to the passageway of interface to selectively block coupling of process fluid to the sensor coupling face.

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