Oxygen sensor based on optical detection

Details Oxygen sensor based on optical detection Oxygen sensor based on optical detection

1986-11-14

1988-08-16

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

422 91, 422 94, 422 98, 436137, 356445, G01N 2178

Patent

active

047643439

ABSTRACT:
A gas sensing apparatus suitable for repeatedly sensing the partial pressure of a selected gas in a gaseous mixture is accomplished by employing optical detecting means. A sensing material having a light reflective surface reversibly reacts with a sensed gas in accordance with a temperature-sensed gas partial pressure relationship to cause a predictable change in reflectivity of the light reflective surface. The chemical reaction between the sensing material and sensed gas is reversible, therefore allowing quick, precise and repetitive sensed gas partial pressure determinations.

REFERENCES:
patent: 3663176 (1972-05-01), Cagle et al.
patent: 3754867 (1973-08-01), Guenther
patent: 3920402 (1975-11-01), Afanasieu et al.
patent: 4032297 (1977-06-01), Lyshkow
patent: 4181699 (1980-01-01), Kitzinger
patent: 4617277 (1986-10-01), Bohl

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