Over-temperature sense and locate device

Details Over-temperature sense and locate device Over-temperature sense and locate device

1982-01-08

1982-11-30

Yasich, Daniel M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

219505, 338 26, 361274, 361282, 374114, G01R 3108, G01R 2726

Patent

active

043617999

ABSTRACT:
The invention is an over-temperature sensor and locator utilizing a temperature sensitive cable comprising (1) an electrical conductor, (2) a dielectric, and (3) a solid, conductive polymeric, positive temperature coefficient of resistance composition. An over-temperature condition at any point along the cable is detected by a drop in the capacitance of the cable, as measured from one end of the cable. The location of the over-temperature point on the cable is determined by comparing the reduced capacitance from the control end to the over-temperature point with the capacitance of the full cable length.

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