Ultrasonic detector

Details Ultrasonic detector Ultrasonic detector

1987-05-01

1989-04-18

Levy, Stewart J.

Measuring and testing

Gas content of a liquid or a solid

By vibration

73 61R, G01N 700

Patent

active

048215589

ABSTRACT:
An ultrasonic detector for detecting air in a fluid. A fluid pumping cassette includes an elastomeric member that defines three sides of a fluid passageway, a base of the cassette defining the other side. Resilient lobes on the elastomeric member extend outwardly in opposite directions on each side of the passageway, directly contacting an ultrasonic sound generator on one side and a piezoelectric sound receiver on the opposite side, the direct contact enhancing transmission of an ultrasound signal through the elastomeric member to facilitate detection of an air bubble in the fluid passage.

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