Method for detecting an operation malfunction of a leakage inspector, and a leakage inspector having a function to detect an operation malfunction thereof
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United States of America Patent
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Sep 28, 2010
Grant Date -
Jan 8, 2009
app pub date -
Jan 12, 2007
filing date -
Jan 13, 2006
priority date (Note) -
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Abstract
A method for detecting an operation malfunction of a leakage inspector causes the leakage inspector to execute a calibration process and an inspection process. The calibration process seals air inside a first device serving as a reference device and measures changes in pressure over two time intervals. The inspection process seals air inside a second device to be checked for a leak and measures changes in pressure over two time intervals. A ratio is calculated from these measured changes in pressure and the ratio is used to determine whether an operation malfunction occurs in the leakage inspector.
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