Acoustic fluid velocity measuring system

Details Acoustic fluid velocity measuring system Acoustic fluid velocity measuring system

G - Physics

01

F

349/39

G01F 1/66 (2006.01) G01P 5/24 (2006.01)

Patent

CA 1133628

ACOUSTIC FLUID VELOCITY MEASURING SYSTEM ABSTRACT OF THE DISCLOSURE An acoustic fluid velocity measuring system includes mutually perpendicular arms disposed in the direction of the rectangular components of the fluid velocity, with each arm supporting two transmitting and two receiving electro-acoustic transducers. Pulses of ultrasonic energy are transmitted and received in and against the direction of fluid flow. The transducers in each arm are arranged in separate electrical loops, each of which provides an output at a different frequency. The frequencies are compared to measure fluid speed and direction which appear on a digital display. The measure- ments are independent of ambient temperature and the transducers are heated so that the system operates under ice forming meteorological conditions.

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