Ultrasonic flow meter

Details Ultrasonic flow meter Ultrasonic flow meter

1975-11-26

1977-10-11

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

System

G01F 166

Patent

active

040528960

ABSTRACT:
An improved apparatus and method for measuring fluid flow in a conduit enables the transmission of ultrasonic signals through the fluid with low signal attenuation and unique phase determination. Ultrasonic burst signals are simultaneously transmitted to axially spaced receivers adjacent a conduit. The transmitted signal is made up of a signal burst having two different frequency signals. The signal frequencies are selected to prevent unwanted signal attenuation by entrapped gases in the fluid and to allow an unambiguous phase determination for the received signal burst.

REFERENCES:
patent: 3007339 (1961-11-01), Hill
patent: 3209591 (1965-10-01), Lester et al.
patent: 3568661 (1971-03-01), Franklin
patent: 3861211 (1975-01-01), Dewan
patent: 3935735 (1976-02-01), Lee

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