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Technical Information
Sniff Method
Utilizing the Agilent Power Probe connected to the test port of the Helium Leak
Detector, the sniff method pinpoints the location and magnitude of leaks from
volumes that have been filled with helium. Settings available in this mode include:
Establishing the minimum displayed range - avoids the distraction of
inconsequential leaks.
Entering set point values for audible and visual alarms.
Adjusting the sampling pressure for best response and clean up and
establishing an alarm should the sniffer probe become plugged.
To access:
1
Select Test Configurations > Applications Setup.
2
Select Sniff Method and press Set-Up and the following figure appears:
Figure 40 Sniff Method
At this point:
The leak detector locks into High Pressure Test (Test only)
Auto Zero < 0 is disabled
Minimum Range defaults to 10
Buttons and Fields
Set Point 1
Agilent Helium Leak Detector User Manual
-7
- This value can be adjusted from 10
Desired Alarmed Leak Rate value (> <) - This value can be
adjusted from 10
-8
to 10
applications are usually programmed for greater than the
acceptable leak rate limits.
-4
. Set Point values in Sniffing
-8
to 10
-4
87
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