Liquid and gas chlorine dioxide photometer

Details Liquid and gas chlorine dioxide photometer Liquid and gas chlorine dioxide photometer

1977-06-22

1979-05-01

Corbin, John K.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

250573, 356410, 356246, G01N 2106

Patent

active

041520734

ABSTRACT:
The density of chlorine dioxide gas in a wet acid atmosphere may be continuously monitored with a photometer energized by a constant voltage incandescent light source illuminating a 0.5 inch thickness, continuous flow sample spaced between quartz glass windows. The emergent light is filtered to pass approximately 4400 Angstrom wavelength light to a selenium photocell. Photocell power output measuring means is calibrated to correspond with chlorine dioxide gas density. The concentration strength of an aqueous solution of chlorine dioxide is continuously monitored with a similar photometer having a 0.125 inch sample space between windows and a 4600 Angstrom filter for the emergent light.

REFERENCES:
patent: 2690695 (1954-10-01), Coates
patent: 3062963 (1960-09-01), Douty
patent: 3572994 (1971-03-01), Hochstrasser
patent: 3797942 (1974-03-01), Joly
patent: 3814664 (1974-06-01), Carlsmith
patent: 3977830 (1976-08-01), Topol

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