Nondispersive infrared gas analyzer

Details Nondispersive infrared gas analyzer Nondispersive infrared gas analyzer

1979-06-07

1981-09-08

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

356414, G01J 100, G01N 2125

Patent

active

042886937

ABSTRACT:
The cross sensitivity of a two-beam infrared gas analyzer is eliminated by using two differently long cells for the measuring gas in the two beam paths and by using an interference filter at least in the beam path containing the longer cell; the filter, however, does not filter the entire beam in that path.

REFERENCES:
patent: 2761067 (1956-08-01), Troy
patent: 3103586 (1963-09-01), Ovrebo et al.
patent: 3916195 (1975-10-01), Burch et al.
patent: 4157470 (1979-06-01), Kotaka et al.

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