Flow meter

Details Flow meter Flow meter

1981-05-22

1986-10-28

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

Using differential pressure

73DIG3, G01F 124

Patent

active

046191461

ABSTRACT:
A flow meter includes a piston having magnetic properties. The piston is located in a cylinder having an outlet slot. Fluid flow into the cylinder and out through the slot determines the position of the piston. The piston is preferably of a magnetic material which interacts with a Hall effect type transducer to produce an output voltage related to the position of the piston and, therefore, to the flow.

REFERENCES:
patent: 1234774 (1917-07-01), Kocourek
patent: 2052022 (1936-08-01), Fisher
patent: 3128625 (1964-04-01), Heineman
patent: 3224270 (1965-12-01), Karol et al.
patent: 4077262 (1978-03-01), Cholet
patent: 4107604 (1978-08-01), Bernier
patent: 4297899 (1981-11-01), Blaney et al.
patent: 4304136 (1981-12-01), McCabe et al.
patent: 4343180 (1982-08-01), Herden et al.

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