Moisture detection apparatus

Details Moisture detection apparatus Moisture detection apparatus

1975-11-17

1977-10-25

Cohan, Alan

Fluid handling

Systems

Programmer or timer

239 63, 92 50, A01G 2500

Patent

active

040552004

ABSTRACT:
A soil moisture detector is disclosed herein for incorporation between a timer controller and an electrical water supply valve. The detector includes a pneumatic diaphragm apparatus whereby a pressure level is maintained or released between a pair of diaphragms in response to a moisture sensing valve buried in the ground. The pneumatic condition of the detector permits the slug of a solenoid valve, responsive to the timing sequence of the timer controller, to open or close a switch for supplying voltage to the water supply valve.

REFERENCES:
patent: 2863698 (1958-12-01), Richards
patent: 3113724 (1963-12-01), DeBough

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