Test gas leak indicator
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United States of America Patent
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Oct 13, 1998
Grant Date -
N/A
app pub date -
Sep 6, 1996
filing date -
Mar 16, 1994
priority date (Note) -
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Abstract
The invention relates to a process for operating a test gas leak indicator (1) with a gas inlet (2) and a test gas-sensitive detector (4), in which all or part of a stream of gas containing the test gas reaching the inlet (2) is taken to the detector (4) in the event of a leak; in order to improve the sensitivity of the leakage detection, it is proposed that the stream of gas be preferably periodically modulated and the signal from the test gas detector (4) be processed in synchronism with the modulation of the gas flow.
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