Apparatus for monitoring operation cycles of an electrically actuated device
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United States of America Patent
Stats
-
Jul 2, 1991
Grant Date -
N/A
app pub date -
Nov 3, 1989
filing date -
Nov 3, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An actuation counter is disclosed for counting the number of operation cycles of a valve or other electrically actuated device. The counter provides a real-time output display of the count for analysis by an operator. A battery operated counting circuit is configured in a housing and is responsive to the detection of load or actuation current on a conductor to increment a stored count. The actuation current which corresponds to the operation cycles of the monitored device is detected by a current probe. A preferred embodiment the counting circuit includes a delay circuit which operates to prevent an increment in the count due to spurious signals such as those induced by contact bounce. Access ports associated with the counting circuit are provided so that an operator can determined the presence or absence of magnetic fields by the use of a voltmeter. The counting circuit also preferably includes a threshold setting circuit and reset switch.
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