About Gas Saver - Agilent Technologies 7820A Advanced User's Manual

About Gas Saver

NO T E
Split mode
Split vent flow
mL/min
Splitless mode
Split vent flow
mL/min
Advanced User Guide
Gas saver is not supported on EPR (electronic pneumatics regulation)
equipped GCs.
Gas saver reduces carrier flow from the split vent after the
sample is on the column. It applies to the Split/Splitless inlet
(all modes). It is most useful in split applications.
Column head pressure and flow rate are maintained, while
purge and split vent flows decrease. Flows—except column
flow—remain at the reduced level until you press [Prep Run].
[Start]
Regular flow
[Prep Run]
Gas saver flow
[Start]
Purge time, 2 min
[Prep Run]
Gas saver flow
Gas saver time, 3 min
Gas saver flow
Time, min
Gas saver time, 5 min
Purge flow
Gas saver flow
Time, min
3
Inlets
Run ends
Run ends
23