Snow and sleet detector

Details Snow and sleet detector Snow and sleet detector

1976-09-24

1978-01-10

Schaefer, Robert K.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

200 6104, 340234, H01H 8300

Patent

active

040681335

ABSTRACT:
An improved snow and sleet detector having a pair of substantially parallel detector screens spaced one below the other, the upper screen being open to the ambient. A rim is included which is highly thermally conductive and electrically conductive and encompassing the upper screen proximate the edges thereof. A thermostatically controlled heater is mounted in intimate thermal and electrical contact with the rim for maintaining the rim and detector screens at a temperature high enough to melt snow or sleet falling thereon. Circuiting is described for providing an electrical indication when the detector screens are conductively coupled by melting snow or sleet.

REFERENCES:
patent: 2787695 (1957-04-01), Dyke
patent: 3157800 (1964-12-01), Burwell

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