Gas analyzer with diffusion filter

Details Gas analyzer with diffusion filter Gas analyzer with diffusion filter

1989-11-02

1991-10-08

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

Analyzer supplier

73 3107, 7386323, G01N 122

Patent

active

050543288

ABSTRACT:
A gas analyzer comprises a diffusion filter to segregate sampled gases containing liquid and particulate solid contaminants from the analyzer. A gas permeable diffusion membrane separates a flowing stream of dirty sample gas from a closed circuit clean gas stream circulated through an analyzer. The membrane does not pass liquids or particulate solids but does permit rapid diffusion of gases so the gas composition in the closed circuit rapidly reaches equilibrium with the sample gas.

REFERENCES:
patent: 3367850 (1968-02-01), Johnson
patent: 3431771 (1969-03-01), Tsien
patent: 3457787 (1969-07-01), Maatsch et al.
patent: 3552211 (1971-01-01), Dollinger et al.
patent: 3718434 (1973-02-01), Pierce
patent: 3926561 (1975-12-01), Lucero
patent: 3942357 (1976-03-01), Jenkin
patent: 3955943 (1976-05-01), Pontius
patent: 4656865 (1987-04-01), Callan
Patent Abstracts of Japan (59-142439); GRP; p. 321, vol. 8, No. 275; ABS Pub. Date 12/15/1984.

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