INFICON UL1000 Helium leak detector - Manual (Page 72)

72
Description of the Menu
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Part under test
The number of the first part to be tested can be entered. The number counts
automatically up at the next test cycle. In disable mode this function is switched off.
Reference measurement
This mode can be used to clean up the chamber after a helium contamination or after
a series of failed parts. The chamber will be pumped down and vented 3 times.
The Reference measurement includes a calibration procedure with the internal test
leak TL of UL1000. After this clean up the actual helium background is measured
and will be subtracted from the following measurements.
The new values of the measured background will be saved automatically:
Fig. 6-17
Fig. 6-18
Fig. 6-19