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Process sensor module having a single ungrounded input/output conductor

  • US 6,508,131 B2
  • Filed: 05/21/2001
  • Issued: 01/21/2003
  • Est. Priority Date: 05/14/1999
  • Status: Expired due to Term
First Claim
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1. A process sensor module, comprising:

  • a housing including a first fitting adapted to rotatably mate with a second fitting on a bus adapter module;

    integrated circuitry disposed in the housing, the integrated circuitry including a process sensor adapted to sense a process variable;

    a two conductor circuit connected to the integrated circuitry, and adapted to energize the integrated circuitry;

    communicate the sensed process variable to the bus adapter module; and

    communicate data from the bus adapter module to the integrated circuitry; and

    a rotatable coaxial electrical contact that is sealed in the first fitting and that is adapted to connect the two conductor circuit to the bus adapter module.

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