Fluid leakage detecting apparatus

Details Fluid leakage detecting apparatus Fluid leakage detecting apparatus

1982-07-08

1985-07-16

Myracle, Jerry W.

Communications: electrical

Condition responsive indicating system

Specific condition

73204, G08B 2100

Patent

active

045299749

ABSTRACT:
An apparatus for detecting leakage of fluid comprises a bridge circuit composed of a heat generating resistance element connected in one arm and installed at a location where leakage of fluid may possibly occur and other resistor elements inserted in other arms, respectively, an input power supply source connected to the input of the bridge circuit and a differential amplifier connected to the output of the bridge circuit for amplifying an unbalance voltage produced by the bridge circuit, wherein the resistor elements inserted in the other arms of the bridge circuit are so dimensioned that the heat generating resistance element is maintained in a heat generating state.

REFERENCES:
patent: 2499806 (1950-03-01), Wolsk et al.
patent: 3132506 (1964-05-01), Pritchett
patent: 3786675 (1974-01-01), Delatorre et al.
patent: 3874222 (1975-04-01), Ladd et al.
patent: 3967256 (1976-06-01), Galatis
patent: 4373387 (1983-02-01), Nishimura et al.

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