Setting Parameters For The S/Sl Pulsed Modes - Agilent Technologies 7820A Advanced User's Manual

3
Inlets

Setting parameters for the S/SL pulsed modes

NO T E
38
Press [Prep Run] (see
6
before manually injecting a sample (this is automatic for
Agilent ALS).
If a column in the flow path is not defined
Press [Front Inlet] or [Back Inlet].
1
Scroll to Mode: and press [Mode/Type]. Select Splitless.
2
Set the inlet temperature.
3
Enter a Purge time.
4
Set your Total flow greater than the sum of column flow plus
5
the septum purge flow—see
page 25—to guarantee adequate column flow.
Press [Prep Run] (see
6
before manually injecting a sample.
Pulsed split and pulsed splitless modes are not supported on EPR
(electronic pneumatics regulation) equipped GCs.
The pulsed mode parameters are the same as the non-pulsed
parameters, but with two additional values.
Pulsed pressure The inlet pressure you want at the start of the
run. The pressure rises to this value when [Prep Run] is pressed
and remains constant until Pulse time elapses, when it returns to
Pressure.
Pulse time This is the time after the start of the run when the
inlet pressure returns to Pressure.
"Pre Run and Prep Run"
"Pre Run and Prep Run"
"Pre Run and Prep Run"
on page 25)
on
on page 25)
Advanced User Guide