12 Injection Port
12.5 Split/Splitless Injection System
129
GC-2010 Plus
12.5.4 Gas saver
The gas saver function reduces the split ratio during a split or splitless analysis. This
reduces the amount of carrier gas flowing through the split flow line, conserving carrier gas.
Even though this can change the split ratio, the column inlet pressure is kept at a constant
value. In other words, changing the split ratio does not affect the carrier gas flow rate
through in the column.
NOTE To set the Gas Saver AOC link and the time of the Gas Saver auto on, refer to “16.6.11 Other
Settings”
in “16.6 GC Configuration”.
12.5.4.1 Screen description
Select [Gas Saver] (PF menu) from the [FLOW] key to display the Gas Saver screen
shown in Fig. 12.5.6.
12.5.4.2 Parameter list
GAS SAVER
Selection: On/Off, Default: Off
Select “On” to use the gas saver function.
Select “Off” to disable the gas saver function.
GAS SAVER SPLIT RATIO
Range: 0.0−9999.9, Default: 5.0
Set the split ratio which will reduce the split flow to conserve carrier gas.
Setting “0” closes the split flow line.
GAS SAVER START TIME
Range: 0.00−9999.99 min, Default: 1.00 min
Specify the period of time after analysis starts until the split ratio switches to gas saver mode.
This period of time should be longer than the time required for the sample to move from
the injection port to the column.
Setting the gas saves start time too early can provide unpredictable quantitation results.
Fig. 12.5.6 Gas saver setup screen
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