Nondispersive infrared gas analyzer

Details Nondispersive infrared gas analyzer Nondispersive infrared gas analyzer

1978-10-23

1979-12-25

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250345, G01J 100

Patent

active

041807324

ABSTRACT:
The sensitivity and selectivity of a two beam analyzer operating with negative filtering and differential absorption-pressure detection is improved by employing differently long cells for the sample gas in the two beam paths, which reduces the effect resulting from overlapping absorption bands of the wanted and of unwanted components in the sample gas.

REFERENCES:
patent: 3725702 (1973-04-01), Schaefer
patent: 3925667 (1975-12-01), Staab

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