Ultrasonic method of testing a plate heat exchanger for leakage
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United States of America Patent
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Apr 4, 2000
Issued Date -
N/A
app pub date -
Oct 20, 1998
filing date -
Dec 14, 1993
priority date (Note) -
Expired
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Abstract
A vessel such as a dairy pasteuriser having a path B for product and a separate path A for coolant in intimate relationship is tested for leaks by circulating a donor fluid under pressure in path A whilst a recipient fluid such as clean tap water is circulated in path B. The donor fluid is a gas, and leakage is detected using an ultrasound probe.
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