Method and apparatus for sampling a reactive atmosphere into a v

Details Method and apparatus for sampling a reactive atmosphere into a v Method and apparatus for sampling a reactive atmosphere into a v

Filed on

1993-01-22

Date issued

1994-06-07

Examiner

Housel, James C.

Patent Class

Chemical apparatus and process disinfecting, deodorizing, preser

SubClass

Analyzer, structured indicator, or manipulative laboratory...

SubSubClass

Means for analyzing gas sample

Other Related Categories

73 232, 73 2335, 422 99, G01N 3100, G01N 3104

Type

Patent

Status

active

Patent number

053187520

Description

ABSTRACT:
A method and apparatus for transferring a reaction gas between a high pressure environment and a low pressure environment. A baffle channel is disposed in a fluid communication path between the high pressure environment and the low pressure environment. Also disposed in the path is an element for limiting gas flow conductance. A shield gas is introduced into the baffle channel and a longitudinal laminar counterflow of the shield gas established toward the high pressure environment, opposing the flow of the reaction gas toward the low pressure environment. The shield gas hinders access of the reaction gas to the element for limiting gas flow conductance, so that a desired ratio of partial pressures of the gas to be transferred in the high pressure environment exceeds the partial pressure of that gas at the end of the baffle channel nearest the low pressure environment, protecting the element for limiting gas flow conductance, and regulating the amount of reaction gas transferred into the low pressure environment.

REFERENCES:
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patent: 4023398 (1977-05-01), French et al.
patent: 4091655 (1978-05-01), French et al.
patent: 4135382 (1979-01-01), Capone
patent: 4137750 (1979-02-01), French et al.
patent: 4718268 (1988-01-01), Reid et al.
patent: 4902099 (1990-02-01), Okamoto et al.
patent: 4935624 (1990-06-01), Henion et al.
patent: 5009849 (1991-04-01), Ebner et al.

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