4 Using the control module
Clarity Controls
4.3.2 Front (Back) Inlet
Fig 8: Method Setup - GC - Inlet
This tab governs the settings concerning the inlets of the
Agilent 7890
chromatograph. According to configuration of particular chromatograph,
there can be
Front Inlet
or
Back Inlet
tabs, both with the same appearance.
Particular fields may vary, according to the type of the inlet set.
Temperature Mode
Defines the temperature mode for the inlet. Available for COC and PTV
inlets.
Carrier Gas
Sets the type of carrier gas used on this GC.
Temperature Gradient Table
Allows to edit temperature ramp for the inlet (up to three rates and
plateaus). Available for COC and PTV inlets.
Injection Pulse (Press + Time)
Sets the pressure and duration of pressure pulse during injection of the
sample. Available for PTV and Split/Splitless inlets.
Pneumatic Mode
Defines the operation mode for the injector port. Available for PTV and
Split/Splitless inlets.
Total Flow
Turns on/off and sets the flow rate for carrier gas. The value entered here
is used only when there are no columns defined on the GC, however the
- 13 -