Fluid flow measuring device

Details Fluid flow measuring device Fluid flow measuring device

1991-10-22

1993-10-12

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Mass flow by imparting angular or transverse momentum to the...

73 3, 73250, G01F 1300

Patent

active

052514897

ABSTRACT:
A fluid flow measuring device having a positive displacement piston in a precise bore glass flowtube, with flexible diaphragms at opposite ends of the flowtube, to seal the flowtube from the ambient environment. The flowtube is filled with a pure fluid or gas for uncontaminated operation of the piston. Movement of the piston within the sealed flowtube is controlled by controlling the movement of each diaphragm. The diaphragms are supported in a housing connected to each opposite end of the flowtube, with a plenum chamber in communication with each diaphragm, and with means for the ingress and egress of the fluid under flow measurement with the plenum chamber.

REFERENCES:
patent: 2014664 (1935-09-01), Nicholls
patent: 3101616 (1963-08-01), Klein
patent: 3181360 (1965-05-01), Hederhorst
patent: 3635214 (1972-01-01), Rand et al.
patent: 4067239 (1978-01-01), Arvisenet
patent: 4240291 (1980-12-01), Andersson et al.
patent: 4398428 (1983-08-01), Kato et al.
patent: 4644976 (1987-02-01), Peter et al.
patent: 4823598 (1989-04-01), Carpenter et al.
Califlow Flowrate Calibrater Product Literature Of Arcstart Inc. Feasterville Pa. 3 pages.

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