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Operation
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GA10218_002_C0 - 10/2016 - © Leybold GmbH
pressed, the value must drop below the limit once as the function will otherwise be
triggered when the alarm delay time has elapsed. This will prevent an excess
amount of helium from entering the mass spectrometer. Consequently, the leak
detection unit is prevented from becoming contaminated by helium. The helium
entering the specimen can be pumped out using an external pump. If no pump is
available, we recommend that you ventilate the specimen before continuing with
the measurements.
Pressure limits for vacuum mode.
Main menu > Settings > Monitoring functions > Pressure limits for vacuum mode
With this function the default settings for the pressure limits EVAC - GROSS and
FINE can be changed.
This might be necessary if other gases than air will be pumped by the PHOENIX
L300i. The pressure signal from the gas dependent inlet pressure (P1) will dump
false signals. With changing the pressure limits this performance will be adjusted.
Softkey No. 1:
Back
Softkey No. 3:
Off
Softkey No. 4
Enter limit value
Selection between air or Argon
Softkey No. 5:
?
Help text
Softkey No. 6:
On
Softkey No. 7:
Off
Softkey No. 2:
Decrease change over threshold EVAC-GROSS
Selectable between15-3 mbar (Default value 15 mbar)
Softkey No. 3:
Decrease change over threshold GROSS-FINE
Selectable between 0,2-0,05 mbar (Default value 0,2 mbar). For the
PHOENIX L300i DRY and the PHOENIX L300i MODUL the changeover is
between 0,1-0,05 mbar (Default value 0,2 mbar).
Softkey No. 4
Adjustment for ARGON
Selection between air or Argon
Softkey No. 5:
?
Help text
Pressure limits for vacuum
mode
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