Ultrasonic sensing

Details Ultrasonic sensing Ultrasonic sensing

1982-03-22

1988-09-27

Myracle, Jerry W.

Measuring and testing

Vibration

By mechanical waves

73599, G01N 2400

Patent

active

047732679

ABSTRACT:
An ultrasonic device in which a concave transducer, partially surrounded by and insulated from a pair of electrically-grounded shields, focuses a signal and directs it to a limited portion of a second lens which further focuses the signal and directs a highly concentrated signal into a fluid, whereby particles therein can be detected with increased sensitivity, and whereby the composition of a homogeneous fluid can be determined by measuring the amount of the attenuation or the sound velocity of ultrasonic pulses therethrough or by comparing the frequency spectrum of the pulse with known spectra.

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