About Aux Thermal Zone Control; About Cryo Trap Control - Agilent Technologies 7890 Series Advanced Operation Manual

About Aux Thermal Zone Control

About Cryo Trap Control

Advanced Operation Manual
Setting parameters for auxiliary pressure control
Press [Aux EPC #] and scroll to the channel you wish to
1
control. Press [Enter].
Scroll to Initial pressure. Enter a value and press [Enter].
2
If desired, enter a pressure program using the time and
3
rate functions.
Press [On/Yes] to apply Initial pressure and start the
4
program.
There can be up to 3 aux thermal controlled zones.
These zones are 3- ramp programmable.
Run time events may be used to schedule specific
temperatures during the run.
Setting parameters for the aux thermal zone control
Press [Aux Temp #] and scroll to the zone you wish to
1
control. Press [Enter].
Scroll to Temperature. Enter a value and press [Enter].
2
Scroll to Initial time. Enter a value and press [Enter].
3
Scroll to Rate 1. Enter 0 to end the program here or a
4
positive value to create a temperature program.
When configured as a cryo trap, an aux thermal zone has
the following parameters:
Temperature Displays the current trap temperature and
setpoint. Press [On/Off] to turn the zone on or off.
• If On, the cryo trap temperature will remain 10 °C above
the current oven temperature, following the oven program.
• If Off, the GC does not control the trap temperature.
Cold Trap Temperature Enter the target temperature for cryo
trap operation and press [Enter]. Enable this temperature
using run time On and Off events for the aux thermal zone.
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Auxiliary Devices
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