Water run-on timer

Details Water run-on timer Water run-on timer

1994-09-06

1996-09-03

Kashnikow, Andres

Dispensing

Automatic control

222 59, 222640, 25112904, 1376242, B67D 508

Patent

active

055515983

ABSTRACT:
An apparatus for measuring and displaying a time interval between a valve closure and subsequent termination of a flow at a spigot is provided. The apparatus has magnetic sensors coupled to a flow regulating valve for providing a signal indicative of a solenoid-activated valve closure and detectors for determining fluid flow. The detectors have an infra-red light source and associated photo-sensor mounted near the water outlet spigot such that when a fluid flow is present at the spigot, the fluid reflects light from the infra-red light source so that the associated photo-sensor provides an output signal. A differential amplifier compares the photo-sensor output signal with a constant to determine a water run condition. Logic circuitry is connected to the comparison signal output to provide a timer actuation. The timer measures and displays the time interval between a valve closure and subsequent termination of flow at a spigot. The apparatus may be embodied as a hand-held or stationary unit.

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