Apparatus for measuring the concentration of gaseous and/or vapo

Details Apparatus for measuring the concentration of gaseous and/or vapo Apparatus for measuring the concentration of gaseous and/or vapo

1990-01-24

1992-02-18

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

422 63, 422 57, 422 58, 422 8205, 422 86, 422 88, 422 93, 436167, G01N 2100, G01N 3122, G01N 148

Patent

active

050892320

ABSTRACT:
The invention is directed to an arrangement for measuring the concentration of gaseous or vaporous components of a gas mixture by using optically distinguishable reaction zones from gas test tubes which contain a substance reacting with the component to be detected. The change of the reaction zone is determined by means of direct observation and/or by means of an opto-electronic scanning device. This arrangement is improved in accordance with the invention in that the reacting substance is accommodated at least in one channel formed in a carrier. The channel has a cross section in the reaction zone which is less than 1 mm.sup.2.

REFERENCES:
patent: Re29725 (1978-08-01), Johnson et al.
patent: 3924219 (1975-12-01), Braun
patent: 3985017 (1976-10-01), Goldsmith
patent: 4235097 (1980-11-01), Kring et al.
patent: 4269804 (1981-05-01), Kring
patent: 4678894 (1987-07-01), Shafer
patent: 4935875 (1990-06-01), Shah et al.
patent: 4963324 (1990-10-01), May
Grace Company, Grundlagen-Einfuhrung.
Grace Company, Grundlagen-Aufbau+Struktur.

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