The S/Sl Inlet Pulsed Split And Splitless Modes - Agilent Technologies 7890 Series Advanced Operation Manual

Split
Valve
Split Vent Trap
FS = Flow Sensor
PS = Pressure Sensor

The S/SL inlet pulsed split and splitless modes

Advanced Operation Manual
Carrier Supply
80 PSI
Frit
Valve
FS
Column
The pressure pulse modes increase inlet pressure just before
the beginning of a run and return it to the normal value
after a specified amount of time. The pressure pulse:
• reduces the solvent vapor volume
• reduces the risk of inlet overload
• tightens the sample band
• may allow use of a 2 mm liner, reducing the active glass
area
If your chromatography is degraded by the pressure pulse, a
retention gap may help restore peak shape.
You must press [Prep Run] before doing manual injections in
the pressure pulse modes. See
page 40 for details.
EPC Module
Valve
PS
PS
Inlet Weldment
"Pre Run and Prep Run"
Septum Purge
Frit
3
Inlets
on
47