Setting Parameters For The S/Sl Splitless Mode - Agilent Technologies 7890 Series Advanced Operation Manual

Setting parameters for the S/SL splitless mode

Advanced Operation Manual
Table 9 Splitless mode inlet parameters
Parameter Allowed setpoint range
Gas saver time 0 to 999.9 minutes
Gas saver flow 15 to 1000 mL/min
Mode The current operating mode—splitless
Oven temperature Below solvent boiling point
Temperature Actual and setpoint inlet temperatures
Pressure Actual and setpoint inlet pressure in psi, bar, or
kPa
Purge time The time, after the beginning of the run, when
you want the purge valve to open. This is the time in which
the vaporized sample transfers from the liner to the column.
Purge flow The flow, in mL/min, from the purge vent, at
Purge time. You will not be able to specify this value if any
column in the flow path is not defined.
Total flow
The actual flow to the inlet during a Pre- run
(Pre- run light is on and not blinking) and during a run
before purge time. You cannot enter a setpoint at these
times. At all other times, Total flow will have both setpoint
and actual values.
Septum Purge Flow, in mL/min, through the septum purge
line.
Septum Purge Flow Mode Standard (septum purge flow is On
at all times) or Switched (septum purge flow is Off during
injection, turns On at Purge time).
If all columns in the flow path are defined
Press [Front Inlet] or [Back Inlet].
1
Scroll to Mode: and press [Mode/Type]. Select Splitless.
2
3 Set the inlet temperature.
3
Inlets
Suggested starting
value
After purge time
15 mL/min greater than
maximum column flow
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