To Monitor High Vacuum Pressure - Agilent Technologies 5977C Series Operating Manual

4 Operating in EI Mode

To Monitor High Vacuum Pressure

To Monitor High Vacuum Pressure

Pressure monitoring requires an optional G3397B Micro-Ion vacuum gauge.
If you are using hydrogen as a carrier gas or for the JetClean system, the
WAR N IN G
hydrogen gas flow must be off before turning off the MSD power. If the
foreline pump is off, hydrogen will accumulate in the MSD and an explosion
may occur. Read
with hydrogen gas.
Procedure
1 Ensure that the hydrogen supply shutoff valves are closed if you are using
2 Start up and pumpdown the MSD. (See
3 Select Instrument > Edit Tune Parameters to display the Manual Tune dialog.
4 Select the Values tab to view the HiVac reading. (See
Figure 30
98
"Hydrogen Safety"
hydrogen as a carrier gas or for the JetClean system.
page 112.)
Manual Tune Values tab HiVac reading
on page 22 before operating the MSD
"To Pumpdown the MSD"
Figure
5977C GC/MSD Operating Manual
on
30.)