Electronic counter with pump-mounted sensor for cycle indication
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United States of America Patent
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Aug 27, 1996
Issued Date -
N/A
app pub date -
Oct 24, 1994
filing date -
Mar 29, 1993
priority date (Note) -
Expired
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Abstract
A counter apparatus for counting the cycling of fluid flow in an automatic pneumatic pump. A magnet inside the pump repetitively moves along a fixed path in response to the pump cycling. A magnetic sensor for detecting magnetic flux is mounted on the pump. The sensor transmits an electrical signal to a counter in response to detecting the magnet at a certain location. When the magnet leaves this location the sensor stops transmitting the signal. Since the magnet is only at any location along the path only once during a complete pump cycle, the transmitted signal represents a pump cycle which is then counted by the counter.
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