Inficon T-Guard Leak Detection Sensor Manual de usuario Pagina 67

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Operation 65
jina85e 5.fm Technical Handbook(1112)
Q: Why does the follow-up measurement after a gross leakage return a leakage
rate that is too small?
A: Especially after measuring a gross leak, you should purge the measurement line
for at least 4 s with low-helium air, then wait for 1 s before performing the next
measurement.
This removes the residual helium, which could otherwise affect the following
measurements, from the measurement system.
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