Capacitive threshold detector test circuit

Details Capacitive threshold detector test circuit Capacitive threshold detector test circuit

G - Physics

01

F

G01F 25/00 (2006.01) G01F 23/26 (2006.01) G01R 31/28 (2006.01)

Patent

CA 2137531

A test circuit for testing operation of a liquid level detector. The liquid level detector includes a probe that is placed at a test site. A control circuitmonitors changes in capacitance of the probe due to changes in the liquid level at the test site. A test switch grounds an input to the probe which and causes the control circuit to sense an alarm condition. If the detector does not activate an alarm when the test switch is actuated, the detector is not properly functioning and repair or replacement of the level detector is needed.

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