Manually Controlled Inlet - Agilent Technologies 6890 Series Service Manual

Manually controlled inlet

The manually controlled PCOC inlet has a forward pressure regulator (FPR)
that controls the column flow rate. In addition, a forward pressure regulator
with a fixed restrictor (SPR) is used to provide a nominal septum purge flow
rate of 15.0 mL/min. The sample is deposited directly into a capillary column
for analysis.
Forward
pressure
regulator
Figure 230-2
Jun 2001
Septum holder
Manual control
Inlets
Agilent 6890 Gas Chromatograph Service Manual
Cool On-Column Inlet
Theory of operation
Septum purge
regulator
SPR
Spring and
alignment insert
To Detector
230
Purge Vent Flow
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