Float-type flowmeter

Details Float-type flowmeter Float-type flowmeter

1984-10-05

1986-03-04

Woodiel, Donald O.

Measuring and testing

Volume or rate of flow

By measuring thrust or drag forces

G01F 128

Patent

active

045733619

ABSTRACT:
A float-type flowmeter includes a tubular housing adapted to have flow therethrough a fluid medium the flow of which is to be measured, and a spring-loaded float positioned within the housing and adapted to be lifted axially therein by the flow of the medium. A ring-shaped gap is defined between the float and the inner surface of the housing. The float includes a hollow cylinder defining axially therethrough an inner flow channel, and an orifice plate extending across the flow channel, the orifice plate having therethrough an orifice defining the narrowest part of the flow channel. The ratio of the thickness of the orifice, measured axially of the cylinder, to the diameter of the orifice, measured transversely of the cylinder, does not exceed 0.5 for flow rates of approximately 0.1 to 5.0 l/min, and is approximately 1.0 for flow rates of between 2 and 20 l/min and above.

REFERENCES:
patent: 3835885 (1974-09-01), Kreyenberg
patent: 4166936 (1979-09-01), Tice
patent: 4227409 (1980-10-01), Bingler
Zum Stand der Technik: DE-Buch: Hengsten-erg: Messen und Regeln in der Chemischen Technik, Berlin 1957, S.263-264.

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