Gas detectors

Details Gas detectors Gas detectors

1978-06-27

1979-11-13

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Gas chromatography

734215R, G01N 3100

Patent

active

041738861

ABSTRACT:
This invention relates to portable gas detectors having means for aspirating a sample of the atmosphere to be tested into the vicinity of two sensor devices, and including a water-trap comprising valve means arranged, in response to a drop in pressure in the flow line when water is accidentally sucked in with an aspirated sample, to temporarily close the sample flow path or to open a by-pass for detecting the presence of both natural gas and manufactured gas in the atmosphere.

REFERENCES:
patent: 2162395 (1939-06-01), Bennett
patent: 3956940 (1976-05-01), Guild
patent: 3973848 (1976-08-01), Jowett et al.

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