Process and device for measuring the flow rate of a fluid

Details Process and device for measuring the flow rate of a fluid Process and device for measuring the flow rate of a fluid

1980-07-24

1982-06-22

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring transit time of tracer or tag

G01F 168, G01F 170

Patent

active

043356168

ABSTRACT:
A device for measuring the velocity of flow of a fluid comprises a length of pipeline through which the fluid flows. A first resistance is mounted to extend across the pipeline at a first point and is supplied with periodic input pulses by a pulse generator such that the temperature of the first resistance is caused to rise periodically. A second resistance is mounted to extend across the pipeline at a second point which is spaced downstream of the first point. The second resistance has a value which varies with temperature and produces an output signal when it detects fluid heated by the first resistance. A circuit measures the time between an input pulse and the corresponding output signal such that the velocity of the flow of the fluid can be determined.

REFERENCES:
patent: 2724271 (1955-11-01), Shawhan
patent: 2799165 (1957-07-01), Varvel
patent: 3019647 (1962-02-01), Beard et al.
patent: 3922912 (1975-02-01), Bradbury
patent: 4173888 (1979-11-01), Suzuki
patent: 4237730 (1980-09-01), Feng

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