Apparatus for measuring or controlling the separation ratio of g

Details Apparatus for measuring or controlling the separation ratio of g Apparatus for measuring or controlling the separation ratio of g

1983-04-01

1985-12-03

Chiesa, Richard L.

Measuring and testing

Gas analysis

Gas chromatography

G01N 3100

Patent

active

045559317

ABSTRACT:
An apparatus for indirectly measuring or controlling the separation ratio of a gas to be measured or controlled when passing through a branch passage. A diluent gas with a known and adjustable flow rate is supplied to each of the branched passages through which the gas to be measured flows. The difference in the concentration of a specified gas in each of the branched passages is then measured. If the difference is equal to zero, then the separation ratio of the diluent gas is equal to the separation ratio of the gas to be measured. Alternatively, the separation ratio of the diluent gas may be set to a predetermined desired value and the flow of the gas to be measured controlled until the detected difference in concentration is equal to zero, at which point the separation ratio of the gas to be measured is equal to the separation ratio of the diluent gas.

REFERENCES:
patent: 2263335 (1941-11-01), Heinz
patent: 2449067 (1948-09-01), Guillemin, Jr.
patent: 3300282 (1967-01-01), Risk et al.
patent: 3334513 (1967-08-01), Thomas
patent: 3357232 (1967-12-01), Lauer
patent: 3447359 (1969-06-01), Kapff
patent: 3603155 (1971-09-01), Morris et al.
patent: 3686930 (1972-08-01), Kniebes et al.
patent: 4100789 (1978-07-01), Joyce
patent: 4134289 (1979-01-01), Bohl et al.

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