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

041596471

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 mounted in longitudinally spaced relation to each other in the channel and below the level of the flowing liquid. The transducers are positioned and directed so that the effective measuring path therebetween is reflected from the underside of the liquid surface level and 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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