Soapfilm flowmeter device for measuring gas flow rates

Details Soapfilm flowmeter device for measuring gas flow rates Soapfilm flowmeter device for measuring gas flow rates

1988-08-29

1990-04-10

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring transit time of tracer or tag

G01F 1708

Patent

active

049149555

ABSTRACT:
A device for measuring rates of gases over a wide range of absolute pressures is provided which comprises a soapfilm generating chamber having a magnetically actuated, slidable cup which is used to form a soapfilm at the lower end of a flow metering tube, a flow metering tube having photoelectric or other flow measuring means, and a soapfilm trap with puncturing means which punctures the soapfilm after it has been made to travel the length of the flow metering tube by the flow of gas to be measured. The device of the present invention provides a simple, inexpensive means for measuring gas flow rates over a wide range of gas pressures, and the device can be used conveniently and accurately in taking measurements in a variety of different applications.

REFERENCES:
patent: 3248941 (1966-05-01), McArthur
patent: 3277707 (1966-10-01), Rodel
patent: 3748902 (1973-07-01), Guild
patent: 4762004 (1988-08-01), Lalin et al.
Gooderham "Soap Film Calibrators in Journal of The Society of Chemistry".

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