Gas flowmeter and soap bubble generator

Details Gas flowmeter and soap bubble generator Gas flowmeter and soap bubble generator

1986-09-25

1988-08-09

Noland, Tom

Measuring and testing

Volume or rate of flow

By measuring transit time of tracer or tag

G01F 1708

Patent

active

047620048

ABSTRACT:
A gas flow measuring device comprising a flowtube, a soap bubble generator for generating a film of soap, a manually adjustable member for controlling the transfer of the soap film to the flowtube and a set of detectors spaced apart along the flowtube for measuring the time displacement of the soap bubble between the spaced positions of the detectors. The manually adjustable member is preferably a hoop surrounding the flowtube. A soap bubble is formed by immersing the hoop into the soap solution and withdrawing it. A soap film is transferred to the flowtube by raising the hoop to the mouth of the flowtube. In a second embodiment, a sleeve with slots surrounds a flowtube with slots. The sleeve is rotated into alignment with the flowtube to transfer a soap film.

REFERENCES:
patent: 3248941 (1966-05-01), McArthur
patent: 4691577 (1987-09-01), Lalin et al.

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