Electronic flowmeter system with a stopper against undesirable f

Details Electronic flowmeter system with a stopper against undesirable f Electronic flowmeter system with a stopper against undesirable f

1994-12-02

1996-11-19

Chilcot, Richard

Measuring and testing

Volume or rate of flow

System

1375195, G01F 700

Patent

active

055764860

ABSTRACT:
An electronic liquid flow measuring system has a power source, a main electronic flow meter and a secondary liquid low flow electronic meter connected to bypass the main meter. A microprocessor controls flow measurements and a three-position valve is connected to both meters for closing the main flow meter at very low flows to permit only the secondary liquid flowmeter to operate at such low flows. At normal flows, the valve is in a position to allow liquid to flow through both meters and when liquid flow exceeds a predetermined flow rate, the valve blocks all flow.

REFERENCES:
patent: 2390749 (1945-12-01), Swift
patent: 3555901 (1971-01-01), Delatorre et al.
patent: 3677084 (1972-07-01), Masson et al.
patent: 4100799 (1978-07-01), Bradham, III et al.
patent: 4175434 (1979-11-01), Bradham, III et al.
patent: 4257448 (1981-03-01), Shiu et al.
patent: 4429571 (1984-02-01), Kullmann et al.
patent: 4885943 (1989-12-01), Tootell et al.
patent: 5117856 (1992-06-01), Kim et al.

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