Gas leak sensor system

Details Gas leak sensor system Gas leak sensor system

1992-09-01

1994-03-15

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

340605, G01M 326

Patent

active

052937712

ABSTRACT:
A gas leak sensor system detects the presence of gas leaking into any one of a plurality of test spaces for example, refrigeration gas into a refrigeration case. A plurality of tubes extend from each of the test spaces to a sensor location whereat a selector valve is connected to each tube. A controller actuates the selector valves to select tubes in a particular order and a vacuum source draws air and any leaking gas through a selected tube and through a gas sensor to activate an alarm. The gas sensor is purged at least each time a leaking gas has been sensed.

REFERENCES:
patent: 2826044 (1958-03-01), Reer
patent: 3043145 (1962-07-01), Hoffman
patent: 3234749 (1966-02-01), Quick
patent: 3357257 (1967-12-01), Herndon et al.
patent: 3921457 (1975-11-01), Barnes, Jr. et al.
patent: 4612775 (1986-09-01), Branz et al.
patent: 5009076 (1991-04-01), Winslow

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