Electromagnetic flow meter with wide band preamplifier

Details Electromagnetic flow meter with wide band preamplifier Electromagnetic flow meter with wide band preamplifier

1981-11-06

1984-07-10

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

G01F 160

Patent

active

044585420

ABSTRACT:
An electromagnetic flow meter includes a preamplifier with extremely long time constant to achieve wide band operation. To alleviate undesirably long recovery from transients and the like, an effective dc bias is obtained by periodically resetting the bias levels. The invention is applicable outside the field of electromagnetic flow meters.

REFERENCES:
patent: 3603146 (1971-09-01), Bennett et al.
patent: 3759097 (1973-09-01), Cushing
patent: 3802263 (1974-04-01), Krechmery et al.
patent: 3839912 (1974-10-01), Schmoock et al.
patent: 3955413 (1976-05-01), Steele et al.
patent: 4306191 (1981-12-01), Bader

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