Combustible gas detectors

Details Combustible gas detectors Combustible gas detectors

1977-07-05

1978-10-31

Reese, Robert M.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

338 34, B01J 2340, B01J 2358, G01N 2716, G01N 3112

Patent

active

041232259

ABSTRACT:
The invention provides a combustible gas detector in which a heatable wire filament embedded in a pellet comprising oxidation catalyst material exhibits a change in resistance occasioned by the change in its temperature which occurs due to the oxidation of a combustible gas passing over it.
The pellet is provided with an outer layer of inert non-catalytic material which tends to prevent non-volatile residues from reaching catalytically active regions of the detector.

REFERENCES:
patent: 3166901 (1965-01-01), Bliss
patent: 3644795 (1972-02-01), Taguchi
patent: 3883307 (1975-05-01), Kim
patent: 3955268 (1976-05-01), Chou et al.
patent: 3959764 (1976-05-01), Allman
patent: 4036592 (1977-07-01), Brown et al.

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