Moisture responsive switch

Details Moisture responsive switch Moisture responsive switch

1977-11-23

1981-01-20

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

137 783, 200 6105, 239 63, 340527, G08B 2100

Patent

active

042465745

ABSTRACT:
A moisture responsive switch is employed for controlling the operation of a fluid operated sprinkling system or the like. The moisture responsive switch provides adjustable time delay means to prevent sprinkler flutter due to intermittent rain fall. Switch recovery time delay means may be adjusted to simulate irrigation evaporation conditions of local geographical terrain. Signal alarm means are provided that signal during precipitation independently of sprinkler system control by the moisture responsive switch.

REFERENCES:
patent: 3500844 (1970-03-01), Sanner
patent: 3848616 (1974-11-01), Sanner
patent: 3915185 (1975-10-01), Sanner
patent: 4014359 (1977-03-01), Sanner

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