4 Installing 7890 GC Columns
The GC/MSD Interface for a 7890B Series GC
5977B Series MSD Operating Manual 99
The GC/MSD interface is heated by an electric cartridge heater. Normally, the
heater is powered and controlled by Thermal Aux #2 heated zone of the GC. The
interface temperature can be set from Agilent MassHunter GC/MS Acquisition
software or from the GC. A thermocouple sensor in the interface monitors the
temperature.
The GC/MSD interface should be operated in the range of 250 to 350 C. The
interface temperature should be slightly higher than the maximum GC oven
temperature, but never higher than the maximum column temperature.
The GC/MSD interface can be used with both EI and CI sources. The EI XTR, HES,
and CI sources require a tip seal assembly. The tip seal, spring, and knurled tip
seal retainer interfere with, and must be removed when using the EI SS and Inert
sources.
(See “To Install a Capillary Column in the GC/MSD Interface Using the
Self-Tightening Column Nut” on page 84, and “To Install a Capillary Column in
the GC/MSD Interface Using a Standard Column Nut” on page 89.)
The GC/MSD interface operates at high temperatures. If you touch it when it is
hot, it will burn you.
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