Diagnostic system and method for a valve, especially a check...

Details Diagnostic system and method for a valve, especially a check... Diagnostic system and method for a valve, especially a check...

2004-05-14

2009-11-24

Williams, Hezron (Department: 2856)

Measuring and testing

Blower, pump, and hydraulic equipment

C073S592000

Reexamination Certificate

active

07621179

ABSTRACT:
A diagnostic system and method for a valve, especially a check valve of a positive displacement pump, including at least one solid-borne sound sensor is provided. A first value of a parameter of a sound signal recorded in the closed state of the valve and a second value of a parameter of a sound signal recorded in the open state of a valve are determined essentially. A signal indicating a disturbance is issued if the deviation between the first value and the second value exceeds a predefined threshold value, resulting in particularly good insensitivity.

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