Inlets 3
Advanced Operation Manual 47
The S/SL inlet pulsed split and splitless modes
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 “Pre Run and Prep Run” on
page 40 for details.
Valve
Frit Frit
Valve
EPC Module
Valve
Split Vent Trap
Inlet Weldment
FS = Flow Sensor
PS = Pressure Sensor
FS
PS
PS
Split
Carrier Supply
80 PSI
Septum Purge
Column
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