Flow and Pressure Modules 2
Advanced Operation Manual 27
Auxiliary Pressure Controllers
The Auxiliary Pressure Controller (Aux epc) is also a general
purpose device. It has three independent forward- pressure
regulated channels. Channels are designated by numbers 1
through 9 (there can be up to 3 Aux epcs), depending on
where the module is installed.
If an auxiliary channel is specified as the Inlet during
column configuration, that channel allows run time
programming and three- ramp flow or pressure programming.
Gas input is via threaded fittings. Gas output is via coils of
metal tubing with Swagelok fittings on the ends.
As you look at the module from the back of the GC, the
channels are numbered from left to right according to this
scheme:
• In slot 6. The name is Aux epc #, where # is 1, 2, or 3 and
identifies the channel. In this case, the Aux EPC is
connected to the connector labeled EPC6.
• In slot 5. The name is Aux epc #, where # is 4, 5, or 6 and
identifies the channel. In this case, the Aux EPC is
connected to the connector labeled EPC5.
• In any open slot. The name is Aux epc #, where # is 7, 8,
or 9 and identifies the channel. In this case, the Aux EPC
is connected to the connector labeled AUX DET1 or
AUX DET2.
• In the third detector side of the GC. The name is
Aux epc #, where # is 7, 8, or 9 and identifies the channel.
In this case, the Aux EPC is connected to the connector
labeled AUX DET1 or AUX DET2.
Split vent trap
and valve
Slot 1
Slot 2
Slot 3
Back of GC
Slot 6
Slot 5
Slot 4
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