Plate heat transfer apparatus with leakage detector
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United States of America Patent
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-
Feb 27, 1990
Grant Date -
N/A
app pub date -
Aug 5, 1988
filing date -
Aug 7, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plate heat exchanger has a number of adjacent plates with vents arranged to vent material from transfer bridge zones to atmosphere. An electrode extending lengthwise of the apparatus and through apertures of the plates contacts the vented material when an unacceptable level of accumulation of vented material occurs in dead spaces adjacent the apertures. A detectable change of effective electrical capacitance or resistance caused by the accumulated material approaching or touching the electrode is used to generate a warning signal.
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