Electricity: measuring and testing – Electromechanical switching device – Relay
Patent
1993-12-29
1995-12-19
O'Shea, Sandra L.
Electricity: measuring and testing
Electromechanical switching device
Relay
36455101, 137554, G01R 31327, G01B 1303, E03B 707
Patent
active
054771498
ABSTRACT:
A non-invasive apparatus and method is disclosed which is adapted for testing of solenoid valves to verify valve operation. The non-invasive apparatus and method monitors with time both the stroke of the solenoid valve plunger to identify associated impacts and the state of the solenoid valve as being energized or de-energized to determine valve operability.
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Lind Michael H.
McElroy John W.
Spencer George M.
O'Shea Sandra L.
Phillips Roger
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