Infrared gas analyzer

Details Infrared gas analyzer Infrared gas analyzer

1988-05-16

1989-12-05

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250343, G01N 2126

Patent

active

048854697

ABSTRACT:
An infrared gas analyzer reduces influenced results from interfering gases by utilizing a first filter system intermediate a light source and a gas cell in which the sample is located. The filter system passes light having wavelengths within absorption bands of the gas to be measured. It also reflects light having wavelengths outside of the absorption bands. A second filter system is also intermediate the light source and the first filter system. The second filter system absorbs light having wavelengths within absorption bands of an interfering component gas.

REFERENCES:
patent: 3869613 (1975-03-01), Link et al.
patent: 4236827 (1980-12-01), Horiba et al.
patent: 4794255 (1988-12-01), Miyatake et al.

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