Flow measuring apparatus with analog, essentially linear output

Details Flow measuring apparatus with analog, essentially linear output Flow measuring apparatus with analog, essentially linear output

1987-12-21

1990-02-27

Eisenzopf, Reinhard J.

Electricity: measuring and testing

A material property using electrostatic phenomenon

Frictionally induced

7386108, 324 72, 324 711, G01R 2760

Patent

active

049049445

ABSTRACT:
Flow measuring apparatus comprising a probe (1) coupled via a coaxial cable (2) to control circuitry with a current to voltage convertor (10), absolute value circuit (12), auto zero switch and integration (11, 27) and voltage to current circuit (18) yielding an analog output, corresponding to flow at the probe.

REFERENCES:
patent: 3857066 (1974-12-01), Cline et al.
patent: 4480484 (1984-11-01), Ueyama
patent: 4512200 (1985-04-01), Ghering et al.
patent: 4531402 (1985-12-01), Reif et al.
patent: 4607228 (1986-08-01), Reif
patent: 4714890 (1987-12-01), Dechene et al.

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