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Disclosed is a technique for measuring the saturation level of a liquid in a porous medium.
English (United States)
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Ultrasonic Saturation Level Detector
Disclosed is a technique for measuring the saturation level of a liquid in a
Two ultrasonic transducers (see figure) are mounted on either side of the
porous medium, and are forced against it with a controlled preload. One
transducer functions as a transmitter and the other as a receiver. The acoustical
coupling between the transmitter and receiver is directly dependent on the liquid
saturation level in the porous medium--being essentially zero for the dry case,
and increasing as the saturation level increases. As the coupling increases, the
output of the receiver also increases giving a measure of the saturation level.