Magnetic flowmeter having multiple stage amplifier with automati

Details Magnetic flowmeter having multiple stage amplifier with automati Magnetic flowmeter having multiple stage amplifier with automati

1979-10-09

1981-04-21

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

330 9, G01F 160

Patent

active

042625432

ABSTRACT:
A magnetic flowmeter system includes an automatic zeroing system for a multiple stage amplifier. The zeroing system includes a circuit for sequencing the turn-off time of the zeroing amplifiers such that the first stage zeroing amplifier is turned off before later stages, thereby reducing the effects of zeroing errors introduced when the zeroing amplifier for the first stage signal amplifier is put into a hold state.

REFERENCES:
patent: 3903875 (1975-09-01), Hughes
patent: 4210022 (1980-07-01), Boss

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