Detection of bubbles in a liquid

Details Detection of bubbles in a liquid Detection of bubbles in a liquid

1977-08-30

1978-09-12

Ciarlante, Anthony V.

Measuring and testing

Gas content of a liquid or a solid

By vibration

73432PS, G01N 2902

Patent

active

041127358

ABSTRACT:
The invention provides a method and apparatus for detecting a bubble in a containing medium such as a liquid, and comprises sending an ultrasonic signal at the bubble at or above the resonant frequency of the bubble, exciting a doppler signal scattered by the bubble in response to the signal, and receiving the doppler signal so as to detect the bubble. The doppler signal may be excited by movement of the bubble, or of that part of the apparatus which receives the doppler signal.

REFERENCES:
patent: 3208286 (1965-09-01), Richard
patent: 3741014 (1973-06-01), Tamura
patent: 3802271 (1974-04-01), Bertelson
patent: 3940731 (1976-02-01), Cooper et al.
patent: 3974683 (1976-08-01), Martin

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