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2
To view MSD analyzer temperature and vacuum status
To view MSD analyzer temperature and vacuum status
Software changes
The software is revised periodically. If the steps in this procedure do not match
your MSD ChemStation software, refer to the manuals and online help supplied
with the software for more information.
1 In Instrument Control view, select
Instrument menu.
2 Select the tune file you plan to use with your method from the Load MS
Tune File dialog box.
3 Analyzer temperatures and vacuum status are displayed in the
Unless you have just begun the pumpdown process, the foreline pressure should
be less than 300 mTorr, or the turbo pump should be running at least 80% speed.
MSD heaters remain off as long as the diffusion pump is cold or the turbo pump is
operating at less than 80%. Normally, the foreline pressure will be below 100
mTorr, or the turbo pump speed will be at 100%.
The MSD heaters turn off at the beginning of the vent cycle, and turn on at the end
of the pumpdown cycle. Note that the reported setpoints will not change during
venting or pumpdown, even though both the MSD zones are turned off.
36
Operating the MSD
Edit MS Tune Parameters
from the
field.
Zones
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