Pressure control for partial stroke tests

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United States of America Patent

PATENT NO 9611873
SERIAL NO

15066495

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method of testing a valve actuator coupled to a process control device includes the steps of: controlling, with the process control device, a pressure within the valve actuator to ramp from an initial pressure towards a pre-determined pressure limit; monitoring a position of the valve actuator to detect a travel of the valve actuator; and upon one of the pressure within the valve actuator reaching the pre-determined pressure limit or detecting the travel of the valve actuator, controlling the pressure within the valve actuator to return to the initial pressure.

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Patent Owner(s)

  • FISHER CONTROLS INTERNATIONAL LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Junk, Kenneth W Marshalltown, US 44 677

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