Agilent Technologies 6850 Series - Page 270

Troubleshooting
6850
6850
Released: April 2004 6850 Series Gas Chromatograph Service Procedures 271
Inlet pressure setpoint: 1.5 psi
Carrier supply
total flow in
400
mL/min
Flow sensor
100 psi
input pressure
Total flow
control loop
Proportional
valve 1
Reduced flow
Full flow -
split flow path
1
2
3
4
5.9 psi
Pressure sensor
Septum purge
regulator
fixed @ 3mL/min
Split
Split vent trap
Purge valve
open
vent
Proportional
valve 2
Old style split vent trap
Column flow