TriStar II 3020 Analysis Conditions Files
302-42828-01 - Dec 2012 5-19
Preparation
button (continued)
• Evacuation rate / Unrestricted evac. from - enter the evacuation rate
and the pressure at which unrestricted sample evacuation is to begin.
The option is enabled when Fast evacuation is not selected.
• Evacuation time - enter the length of time for preliminary evacuation
which takes place prior to the free space measurement or sample
analysis if free space is to be Entered or Calculated.
• Leak test - enables the system to check for system leaks or sample
outgassing before the analysis.
The leak test seals the sample tube and monitors the pressure. If the
pressure rises more than 0.15 mmHg, the analysis does not proceed and
a message displays. While leak testing slightly increases analysis time, it
prevents the continuation of analysis and collection of erroneous data if
a leak exists.
Select to enable the Leak test duration field. Enter how long the
pressure is to be monitored.
• Use TranSeal - select if using the TranSeal to transfer the sample from
the preparation port to the analysis port under vacuum.
Free Space button Click to enter the type of free space measurement.
Field or Button Description (continued)