Electromagnetic flow meter

Details Electromagnetic flow meter Electromagnetic flow meter

1983-06-30

1985-06-25

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

G01F 160

Patent

active

045246270

ABSTRACT:
An electromagnetic flow meter includes a fluid-carrying conduit. A signal detecting element detects an electromotive force induced in the fluid in the conduit to produce a first detecting signal. A conduit voltage detecting element detects a voltage of the conduit to produce a second detecting signal. An electrical energy applying device is responsive to the first and second detecting signals for applying a selected amount of voltage to the conduit so that the voltage of the first detecting signal and the detected voltage of the conduit become equal to each other, whereby a profile of the voltage of the conduit is substantially similar to a profile of the electromotive force at least at a position of the signal detecting element.

REFERENCES:
patent: 2733604 (1956-02-01), Coulter
patent: 3411355 (1968-11-01), Cushing
patent: 3999443 (1976-12-01), Appel et al.

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