Multi-plate thin film carbon monoxide sensor

Details Multi-plate thin film carbon monoxide sensor Multi-plate thin film carbon monoxide sensor

1996-08-07

1997-11-25

Brock, Michael

Measuring and testing

Gas analysis

By vibration

356437, 422 91, 436167, G01N 2159

Patent

active

056914652

ABSTRACT:
A gas detector, preferably for carbon monoxide detection, which includes a light detector(5), a light source (1) for providing a light beam which travels along a light path to the detector and detection chemistry (3) disposed in the light path for altering the light beam responsive to the impingement of a predetermined gas thereon. The detection chemistry includes a plurality of spaced apart members, each disposed in the light path. Each member includes a chemistry responsive to the impingement of the predetermined gas thereon for reversibly altering the light transmissive properties of the detection chemistry. The chemistry of any one of the members can differ from the chemistry of one or more of the other members if more than two members are present. The detection chemistry can, in part, act as a filter to light from the light beam. The detection chemistry is disposed in a gas ambient, the gas ambient being disposed between the spaced apart members.

REFERENCES:
patent: 4661320 (1987-04-01), Ito et al.
patent: 4668635 (1987-05-01), Forster
patent: 5405583 (1995-04-01), Goswami et al.
patent: 5494640 (1996-02-01), Simon et al.

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