Fluorescent gas analyzer

Details Fluorescent gas analyzer Fluorescent gas analyzer

1976-05-27

1977-08-30

Willis, Davis L.

Radiant energy

Luminophor irradiation

With ultraviolet source

G01N 2138

Patent

active

040456790

ABSTRACT:
A fluorescent gas analyzer to detect the concentration of a trace gas in another gas or a mixture of gases. The invention is particularly adapted to measure pollutant gases in the air, and still more particularly to measure SO.sub.2 in air, stack gases, and the like. The invention includes a removable and heated sample cell. The analytical determinations are made digitally by direct photon counting. The digital logic which handles the data produced by the cell includes means for continuous adjustment to accommodate changes in source energy and means to correct for dark current.

REFERENCES:
patent: 3795812 (1974-03-01), Okabe
patent: 3826920 (1974-07-01), Woodroffe et al.
patent: 3845309 (1974-10-01), Helm et al.

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