Non-dispersive infrared gas analyzer

Details Non-dispersive infrared gas analyzer Non-dispersive infrared gas analyzer

1998-07-27

2000-12-26

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250344, 250345, 250349, G01J 508, G01N 2161

Patent

active

061663832

ABSTRACT:
A non-dispersive infrared gas analyzer for determining concentrations of carbon dioxide and/or carbon monoxide, hydrocarbons, and nitrogen oxides has two measuring cells 4, 6 consecutively traversed by a beam, with an optopneumatic detector 22 for carbon dioxide and an optopneumatic detector 23 for carbon monoxide arranged between them. Detectors 7, 8 for hydrocarbons and nitrogen oxides are arranged on the measuring cell 6 located downstream from detectors 22, 23 in the direction of the beam.

REFERENCES:
patent: 3898462 (1975-08-01), Ishida et al.
patent: 5055688 (1991-10-01), Fabinski
patent: 5429805 (1995-07-01), Uno et al.
patent: 5572032 (1996-11-01), Fujiwara et al.
patent: 5693945 (1997-12-01), Akiyama et al.
JP 5-215684 (A) in Patent Abstracts of Japan, P-1653, Dec. 3, 1993, vol. 17/No. 654.

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