Bubble detector and method of use thereof
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United States of America Patent
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Sep 23, 2003
Issued Date -
N/A
app pub date -
Mar 20, 2001
filing date -
Mar 20, 2001
priority date (Note) -
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Abstract
A bubble detector utilizes an ultrasonic transducer to sample bubbles as they pass the transducer. The envelope of the return signal is analyzed to determine the volume of each sampled bubble. If the total volume of bubbles sampled within a certain period of time exceeds a desired maximum volume, the bubble detector may initiate a system shut down. A bubble detector can be evaluated or calibrated by introducing bubbles into a conduit, detecting the bubbles introduced into the conduit using visual inspection or a bubble detector of known resolution and comparing the results with the examination of a bubble detector under evaluation.
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