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US 2010/0071457 A1Published application
Partial stroke testing with pulsed control loop
AssigneeMaxon Corporation
InventorsGregory T. Filkovski, Jeremy Lewis, David S. Neff, Brice Hyatt
Life of this patent
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Abstract
Partial Stroke Testing (PST) equipment and methodologies provide PST data for one or more valves by withholding or applying power to the one or more valves for periodic time periods that increase by an incremental amount until the one or more valves partially stroke or a maximum test period expires.
Claims20
A Partial Stroke Testing (PST) equipment configuration comprising:
- means for altering application of power to at least one pneumatic valve in a periodic manner;
- and
- means for determining one or more locations of a valve member of the at least one pneumatic valve during the alteration in applied power to the at least one pneumatic valve.
A method for performing Partial Stroke Testing for at least one pneumatic valve, the method comprising:
- altering application of power to at least one pneumatic valve in a periodic manner;
- and
- determining one or more locations of a valve member of the at least one pneumatic valve during the alteration in applied power to the at least one pneumatic valve.
Dependencies are inferred from the claim text.