Operation
GA10218_002_A7 - 9/2015 - © Oerlikon Leybold
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3. Inlet port blanked off
4. Minimum 20 minutes since power on
After starting this function the leak detector starts with evacuating the inlet area.
Earliest two minutes after start the measured value can be accepted as „Back-
ground inlet area“. This value will be saved.
Background suppression
Main menu > Settings > Filter & Background > Background suppression
Leak rate filter
Main menu > Settings > Filter & Background > Leak rate filter
Softkey 3: Off
Deactivation of the offset function. Under certain circumstances a posi-
tive leak rate can be displayed. This setting should be used by experi-
enced users only because of the high possibilities of measuring wrong
leak rates.
Softkey 6: inlet area
Additionally to the internal offset (background) the offset of the inlet area
will be subtracted. This function for the inlet area is only possible in
standby mode, therefore this value has to be determined with the menu
point „Calculate inlet area background“.
Softkey 7: internal only (default)
With start the PHOENIX L300i defines the internal offset (background)
and subtracts this value from the leak rate signal, so that just the leak rate
is shown in the display. This setting should be used as standard setting
for the PHOENIX L300i.
Softkey 3: Fixed
A leak rate filter with a fixed time constant is used
Softkey 6: Auto
Auto makes sure, that the signals are averaged in optimized time inter-
vals, based on the leak rate intensity. Auto also eliminates noise peaks
that are not related to leak rate signals and provides extraordinary short
response times for low leak rate signals. This setting should be used for
the PHOENIX L300i.
Background suppression
Leak rate filter
