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RF ADAPTER FOR FIELD DEVICE WITH LOOP CURRENT BYPASS

  • US 20090311971A1
  • Filed: 06/17/2009
  • Published: 12/17/2009
  • Est. Priority Date: 06/17/2008
  • Status: Active Grant
First Claim
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1. A wireless adapter for use in a two-wire process control loop configured to couple to a process field device in an industrial process control system which is coupled to the two-wire process control loop and provide wireless communication to the process field device, comprising:

  • first and second loop terminals configured to couple in series with the two-wire process control loop;

    wireless communication circuitry coupled to the first and second loop terminals adapted to provide wireless communication to the process field device; and

    loop current bypass circuitry electrically connected between the first and second loop terminals configured to provide a loop current path therebetween in response to an open circuit in a current path of the wireless communication circuitry between the first and second loop terminals.

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