Agilent Technologies 6890 Series Service Manual page 210

Flame Ionization Detector (FID) 310
Theory of operation
Vent
On/off
solenoid
valves Restrictors
Aip in
H in
2
Pressure
regulator
Makeup in
Figure 310-3 Manual detector flow
3 of 24
Detectors
Jun 2001
Agilent 6890 Gas Chromatograph Service Manual