Electromagnetic flow meter using a pulsed magnetic field

Details Electromagnetic flow meter using a pulsed magnetic field Electromagnetic flow meter using a pulsed magnetic field

1986-10-28

1987-12-01

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

G01F 160

Patent

active

047095830

ABSTRACT:
A flow meter comprises electrodes (16, 18), induction windings (12, 14), a winding driver circuit (20), and a processor circuit (22). The winding excitation current is a combination of a current of period T.sub.1 and a current of period T.sub.2, where T.sub.2 >T.sub.1. The processor circuit (22) processes the voltage signal sent by the electrodes and generates intermediate measurement signals of periods T.sub.1 and T.sub.2. These signals are then used to generate a correction signal for removing the relaxation effect from the measurement signal S.

REFERENCES:
patent: 4210022 (1980-07-01), Boss
patent: 4422337 (1983-12-01), Hafner
patent: 4658653 (1987-04-01), Tomita

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