Doppler method of measuring flow

Details Doppler method of measuring flow Doppler method of measuring flow

1979-02-26

1981-04-07

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

128663, G01F 166

Patent

active

042598702

ABSTRACT:
A method of determining the volume flow of a fluid through a conduit usable with a single crystal, whereby at least one of the fluid and the conduit have energy-scattering interfaces. The method in one embodiment includes transmitting a known, uniform sound field through the fluid which illuminates the entire cross-sectional area of the conduit, obtaining the Doppler signal from the received signal such that the sampling region is normal to the direction of propagation of the sound field; and obtaining the integral of the power over this surface. A known volume of fluid totally within the conduit is then sampled for the reference power return therefrom and this reference power return is divided into the first moment of the power to produce a signal proportional to the volume flow of the fluid through the conduit.

REFERENCES:
patent: 2770795 (1956-11-01), Peterson
patent: 3028752 (1962-04-01), Bacon
patent: 3685348 (1972-08-01), Bottcher et al.
patent: 3703652 (1972-11-01), Noda
patent: 3766517 (1973-10-01), Fahrbach
patent: 3783967 (1974-01-01), Apgar
patent: 3977247 (1976-08-01), Hassler
patent: 3987673 (1976-10-01), Hansen
patent: 4067236 (1978-01-01), Hottinger

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