Measuring and testing – Gas analysis – Gas chromatography
Patent
1986-04-21
1987-01-06
Kreitman, Stephen A.
Measuring and testing
Gas analysis
Gas chromatography
204 1T, 204415, G01N 2728
Patent
active
046337040
ABSTRACT:
The housing 1 of a gas sensor carries a diffusion barrier 2 for restricting the access of gas to the sensing element 4 and a filter 3 mounted between the diffusion barrier 2 and the sensing element 4. As a result, gas reaching the filter 3 must first pass through the diffusion barrier 2 so that its flux is substantially reduced and the life of the filter is increased correspondingly.
REFERENCES:
patent: 2913386 (1959-11-01), Clark
patent: 3950980 (1976-04-01), Braun et al.
patent: 4267023 (1981-05-01), Frant et al.
patent: 4324632 (1982-04-01), Tantram et al.
patent: 4406770 (1983-09-01), Chan et al.
Chan Yat S.
Tantram Anthony D. S.
Chapman, Jr. John E.
City Technology Limited
Kreitman Stephen A.
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