Pulsed DC constant current magnetic flowmeter

Details Pulsed DC constant current magnetic flowmeter Pulsed DC constant current magnetic flowmeter

1979-10-09

1982-04-20

Yasich, Daniel M.

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

7386116, G01F 0158

Patent

active

043252613

ABSTRACT:
A magnetic flowmeter includes a coil driving circuit which controls both the maximum, steady state current and the current rise time through the coils and makes them independent of the inductance of the particular coil being driven. The maximum current is set by a reference voltage derived from a common source with a second reference voltage utilized in the signal processing chain. The ratio of these reference voltages therefore remains constant and the output signal is independent of the absolute value of the common source of the two reference voltages.

REFERENCES:
patent: 3396314 (1968-08-01), Corson et al.
patent: 3701954 (1972-10-01), Seminatore et al.
patent: 3783687 (1974-01-01), Mannberg et al.
patent: 3842669 (1974-10-01), Iversen
patent: 3894430 (1975-07-01), Rummel et al.
patent: 4144751 (1979-03-01), Yokoyama
patent: 4204240 (1980-05-01), Schmoock
patent: 4236410 (1980-12-01), Appel et al.

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