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US 2008/0177484 A1Published application
Advanced transmitter isolation feature
AssigneeHoneywell International Inc.
InventorThirumala Gb Sharma
Life of this patent
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Abstract
A signal representative of a pressure is received from an industrial transmitter. An isolation indicator signal may be obtained by control signals from an isolation valve assembly or by signals from a DCS to indicate that isolation has occurred.
Claims20
A system comprising:
- a module that receives a first signal representative of a pressure of a fluid proximate an industrial transmitter;
- wherein the module determines if the industrial transmitter is isolated from the fluid as a function of the pressure.
A method of diagnosing an industrial transmitter coupled to a process fluid, the method comprising:
- receiving a first signal representative of a pressure of a fluid proximate an industrial transmitter;
- receiving a second signal representative of a pressure of a fluid proximate the industrial transmitter;
- calculating a pressure difference as a function of the first and second signals;
- and
- determining if the industrial transmitter is isolated from the fluid.
2 more elements
Dependencies are inferred from the claim text.