User guide

Inlets 8
Advanced User Guide 263
During this user- specified sampling period, the solenoid valve
is closed. Flow to the interface is measured by a flow sensor and
controlled by a proportional valve.
After sampling end The solenoid valve opens. The system
returns to the Before Prep Run state. Flow to the interface is
again measured by a flow sensor and controlled by a
proportional valve while column flow is controlled via
back- pressure regulation. The purge flow is controlled by the
user. If desired, gas saver can be turned on at the end of the run.
Setpoint dependencies
Some setpoints in the flow system are interdependent. If you
change one setpoint, other setpoints may change to compensate.
Valve
Frit
Frit
Frit
Valve
EPC Module
Valve
Split Vent Trap
Gas Sampling Valve
Headspace
Purge and Trap
FS = Flow Sensor
PS = Pressure Sensor
Column
FS
PS
PS
Split
Carrier Supply
80 PSI
Septum Purge