Non-dispensive infrared gas analyzer

Details Non-dispensive infrared gas analyzer Non-dispensive infrared gas analyzer

1974-06-28

1976-04-13

Church, Craig E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

356 51, G01N 2126

Patent

active

039506444

ABSTRACT:
A non-dispersive infrared analyzer, particularly for determining the concentration of a gas in a gas mixture, including a source of infrared radiation, means for modulating the radiation beam, a test chamber in the path of the modulated beams and containing the gas to be analyzed; an absorption chamber in the path of the beams exiting the test chamber, including a forward and a rear portion through which the beams sequentially traverse; and a vaned adjustment structure located in the rear portion of the absorption chamber for adjusting the path length of the beams in the rear portion of the absorption chamber.

REFERENCES:
patent: 3105147 (1963-09-01), Weilbach
patent: 3162761 (1964-12-01), Luft

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