Soap film gas flow measuring device

Details Soap film gas flow measuring device Soap film gas flow measuring device

1987-12-16

1989-08-29

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring transit time of tracer or tag

7386108, G01F 1708

Patent

active

048605921

ABSTRACT:
A soap film gas flow measuring device for computing the rate of gas flow through the device by detecting each moment in time when a soap film crosses two positions in a flow tube through which the soap film is propelled by the gas flow, computing the time difference and calculating the flow rate. A set of insulated wire conductors is inserted through the flow tube at each position at which the soap film is to be detected and circuit means is used to detect a predetermined drop in conductivity between each set of conductors corresponding to the crossover point.

REFERENCES:
patent: 1616481 (1927-02-01), Allen
patent: 3248941 (1966-05-01), McArthur
patent: 3399566 (1968-09-01), Brown
patent: 3820392 (1974-06-01), Becit et al.
patent: 4691577 (1987-09-01), Lalin et al.

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