Agilent Technologies Helium Leak Detector
DRAFT 12/11/17
79
5.1.3.5 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 Figure 5-8 appears.
Figure 5-8 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 -7 - This value can be adjusted from 10-8 to 10-4
Buttons and Fields
Set Point 1 Desired Alarmed Leak Rate value (> <) - This value can be adjusted
from 10-8 to 10-4. Set Point values in Sniffing applications are usu
-
ally programmed for greater than the acceptable leak rate limits.
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