Gas detectors

Details Gas detectors Gas detectors

1977-02-25

1979-03-27

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Gas chromatography

324 30B, G01N 2742, G01N 3106

Patent

active

041459130

ABSTRACT:
Apparatus for determining the concentration of a component of a gaseous mixture by selective absorption of the component in a liquid absorbent and measurement of a property of the absorbent, such as the electrical conductivity, related to the concentration of the component therein, comprising an absorption cell for containing the liquid absorbent; means for bringing a stream of said gaseous mixture into contact with the absorbent; means for flushing the absorption cell with absorbent from a reservoir so as to recharge the cell with absorbent; and means for providing a first signal related to said property of the absorbent immediately after flushing the cell, for providing a second signal related to the property after a predetermined time, and for providing a third signal related to the difference between the second and first signals.

REFERENCES:
patent: 2897436 (1959-07-01), Douty
patent: 2902639 (1959-09-01), Thayer et al.
patent: 3674672 (1972-07-01), Whitesell
patent: 3916300 (1975-10-01), Chisdes et al.
patent: 3934193 (1976-01-01), Hall
patent: 3965414 (1976-06-01), Teass

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