Flow and Pressure Control Part 2. NonEPC control
Inlets
72
Part 2. NonEPC control
Control tables for nonEPC inlet and detector gases provide on/off control but
do not control flow rates or pressures. These must be set manually and verified
using a bubble meter or other flow meter. See page 76 for bubble meter
operation.
Inlets
Pressure regulators, flow controllers, and other controls for nonEPC sample
inlets are mounted in a module on the left side of the GC. See the Inlets volume
for operating information.
Figure 11 NonEPC inlet gas controls
Septum purge
Septum purge flow is set automatically on the nonEPC purged packed inlet; it
can be measured at a vent on the front panel. Septum purge is a user adjustment
on the nonEPC split/splitless inlet.
Purged packed
inlet gas controls
Split/splitless
inlet gas controls
PURGED
PACKED
SPLIT
COLUMN
HEAD PRESSURE
COLUMN
HEAD PRESSURE
INCR
INCR
INCR INCR
CARRIER FLOW TOTAL FLOW SEPTUM PURGE
SEPTUM PURGE
SEPTUM PURGE
SPLIT/SPLITLESS
VENT
VENTINLET VENT
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