QUI-1057
Page 27
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Exchange split tube Used to divert any split flow in standby mode so that the split/recollection tube
can be removed without loss of carrier gas.
Accessed by clicking the
icon.
See Section 3.6.5
Stop run/sequence
The Stop sequence function is used to stop a run or sequence of runs, exit the
Set Gas Flows mode, Exchange split tube mode and Trap Heat procedure.
Stop is accessed by the Stop sequence icon (
) on the toolbar.
NOTE
: If you stop a run at any point after the tube desorption process has started
then some components will have already passed onto the trap which will
therefore need cleaning - along with the GC column - prior to analysing a new
sample.
UNITY 2 schematic
This is accessed using the status icon (
) or by selecting View > Status Show.
See Section 3.3.3
Controlling method
Used to assign the active method as the controlling method by clicking the
icon. See Section 3.3.4.
Leak test
A leak test may be carried out manually via the leak test icon (
). Clicking on
this icon opens a dialogue box with a button to pressurise the flow path and to
perform a leak test. The Leak Test function should be used in conjunction with a
He leak detector. The Leak Test dialogue box also allows the valves controlling
the flow path to be operated independently for assistance with diagnosis of
faults. See Section 3.5.2.
Shutdown Peltier
Coolers
Used to turn off the instruments Peltier coolers.
Accessed by clicking on the
icon
3.3.1
Method Linking
Once selected, Method linking asks the user to add the relevant methods to the Link table and to indicate
how many injections (repetitions) of each method are to be carried out.
