Agilent Technologies 6890 Series - Page 119

240 Programmed Temperature Vaporization Inlet (PTV)
Solvent vent mode
10 of 46
Jun 2001
Inlets
Agilent 6890 Gas Chromatograph Service Manual
gang fitting on the flow manifold. Flow control is the same as for the septum
head.
Figure 240-4 Solvent vent mode flow control diagram: sample and vent
SPR
vent
Split
vent
SPR
FS
PS
PV1
PV2
Flow
limiting
frit
Tota l flo w
control loop
Septum
holder
To det e ct or
Cryo
valve
Trap
Te m p e r a t ur e
conversion
board
Valve
open