Search gas detector with vacuum pump and process for operating such a search gas detector
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United States of America Patent
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Jul 28, 1998
Grant Date -
N/A
app pub date -
Feb 1, 1996
filing date -
Aug 5, 1993
priority date (Note) -
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Abstract
A search gas detector for leak detection instruments includes a gas inlet, a vacuum pump, and an apparatus by which the presence of a search gas is recorded. The vacuum pump is able to pump all reactive gases and the search gas recording apparatus is able to detect enrichments of the search gas. More preferably, the gas inlet is effective for permitting only the search gas to pass therethrough, the detector having a pair of chambers, the first to which the gas inlet and search gas apparatus are connected, and the second to which the vacuum pump is connected. The two chambers are interconnected by a constrictive line with the first chamber having a relatively large volume in relation to the second chamber.
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