Apparatus for the detection of a combustible gas

Details Apparatus for the detection of a combustible gas Apparatus for the detection of a combustible gas

1980-04-21

1982-02-02

Serwin, Ronald

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

338 34, 422 96, G01N 2716

Patent

active

043139078

ABSTRACT:
An improvement is provided in apparatus used to detect combustible gases, which embodies a Wheatstone bridge circuit including a refractory-coated detector element having thereon a catalyst for promoting oxidation of the combustible gas to be detected constituting one leg of the bridge and a refractory-coated reference element constituting a second leg of the bridge. The improvement, in its broadest aspect, consists in using a mixture of palladium, palladium oxide and nickel oxide as the catalyst on the detector element. In addition, an improved reference element is provided which has a coating of either sodium metasilicate or lead borate deposited thereon.

REFERENCES:
patent: 2805134 (1957-09-01), Strange
patent: 2904406 (1959-09-01), Moore
patent: 3200011 (1965-08-01), Baker
patent: 4045177 (1977-08-01), McNally
patent: 4072467 (1978-02-01), Jones
patent: 4193964 (1980-03-01), John

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