Leak detector

Measuring and testing – With fluid pressure – Leakage

Patent

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Details

340242, G01M 328, F17D 304

Patent

active

039699234

ABSTRACT:
A detector for sensing and signalling leakage in a closed fluid system, the detector having inlet and outlet passages connected by parallel main and secondary channels. The main channel is provided with normally closed sealing means to prevent communication between the inlet and outlet passages, and the secondary channel is provided with an element that moves in response to a pressure differential across the secondary channel. The main channel sealing means opens in response to a threshold differential pressure between the inlet and outlet passages, the threshold for the main channel being high to allow flow only when fluid is intentionally passed through the detector. The threshold for the secondary channel is low to permit movement upon pressure differentials caused by leaks, the secondary channel movable means having magnetic flux associated with it to actuate reed switch when this means is moved by a pressure differential across the secondary channel.

REFERENCES:
patent: 2952389 (1960-09-01), Fowler et al.
patent: 3788127 (1974-01-01), Marsh
patent: 3817087 (1974-06-01), Mooney

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