Apparatus for measuring the flow quantity or associated paramete

Details Apparatus for measuring the flow quantity or associated paramete Apparatus for measuring the flow quantity or associated paramete

1978-01-20

1979-07-03

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

System

73290V, G01F 166

Patent

active

041596463

ABSTRACT:
The invention relates to ultrasonic apparatus for measuring flow quantities and related parameters of a liquid flowing with a free surface in a channel. Two transducers are provided with one being mounted in the channel below the level of the flowing liquid. The other transducer is mounted on a float member which is floatable on the surface of the liquid. The transducers are effectively positioned from each other and a measuring path is formed therebetween which has components in the vertical direction and in the direction of flow. There is a measuring circuit for determining the transit times of the ultrasonic waves in both directions and an evaluating circuit for determining the desired quantities with regard to the transit times.

REFERENCES:
patent: 3546935 (1970-12-01), Bruha
patent: 3910116 (1975-10-01), Smith
patent: 4028938 (1977-06-01), Eck
Suzuki et al. "Ultrasonic Method of Flow Measurement in Large Conduits and Open Channels", 1972, pp. 129-135.

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