Method and device for taking gas samples

Details Method and device for taking gas samples Method and device for taking gas samples

1974-11-05

1976-04-13

Serwin, R. E.

Chemistry: physical processes

Physical processes

Crystallization

23254R, 734215R, G01N 122

Patent

active

039501361

ABSTRACT:
Method and apparatus for determination of the average composition of a gas under pressure over a certain period of time by regularly taking gas samples, which are stored in a collecting vessel. The gas is periodically led for a short, each time identical, length of time to the collecting vessel via a line in which a part is so dimensioned that, at a supercritical pressure ratio, a gas velocity occurs in it equal to the velocity of sound in the gas. In this way, all samples contain the same quantity of gas and a truly average sample is collected in the collecting vessel, as long as the pressure in the collecting vessel is less than about half the pressure upstream of said part.

REFERENCES:
patent: 2775885 (1957-01-01), Rassweiler et al.
patent: 2785567 (1957-03-01), Poole et al.
patent: 3429186 (1969-02-01), Price et al.
patent: 3837808 (1974-09-01), Sugimoto et al.

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