Agilent Technologies 5977B CI MSD, Operating Manual

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3 Installing Intuvo 9000 GC Columns

The GC/MSD Interface for a 9000 Series GC
76 5977B Series MSD Operating Manual
The GC/MSD Interface for a 9000 Series GC
The GC/MSD Interface is a heated conduit into the MSD for maintaining MSD
vacuum and a suitable column effluent temperature. (See
Figure 18 .) The
GC/MSD Interface is bolted onto the right side of the analyzer chamber, with an
O-ring seal and has a protective cover which should be left in place.
One end of the interface passes through the side of the GC and is accessed from
inside the GC front door. This allows connection of the 9000 GC/MS Tail column
nut. The 9000 GC/MS Tail includes a swagged ferrule and column nut for
attaching to the GC end of the GC/MSD Interface. The 9000 GC/MS Tail
transports the column effluent from a heated column bus connector in the GC,
through the heated GC/MSD Interface, and exits slightly past the end of the
column guide tube and into the ionization chamber. The 9000 GC/MS Tail
maintains temperature at several points along its length by a heated bus, an MS
tail heater assembly, and the GC/MSD Interface.
The 9000 GC/MS Tail is heated by an electric cartridge heater. The heater is
powered and controlled by a heated zone of the 9000 GC. The 9000 GC/MS Tail
temperature can be set from the Agilent MassHunter GC/MS Acquisition
software or from the GC. A sensor (thermocouple) in the interface monitors the
temperature.
The interface tip seal assembly is required when using the EI XTR source or the
HES.
The 9000 GC/MS Tail should be operated in the 250

to 350

C range. Subject to
that restriction, the GC/MSD interface temperature should be slightly higher than
the column temperature, but
never higher than the maximum column
temperature.
Figure 18. The GC/MSD Interface for a 9000 GC (not to scale)
Interface tip seal
Knurled tip seal retainer
Tip seal base
Heater sleeve and
heater/sensor assembly
Insulation
Cover
MS tail heater assembly
9000 GC/MS tail