Using the Adv Fctn Key
Advanced Function Descriptions
51
During parameter incrementing, each vial is sampled and returned to the
carousel. The sampler displays 7694 NOT READY for the duration of the GC
Cycle Time between each incrementation. If Vial Temp is incremented, the
display reads WAITING FOR READY until the new setpoint is reached. The
default values for both displays are 0.0, which means that the parameter
increment is off. The two parameters are mutually exclusive: if a nonzero
number is entered into one, the other must be set to zero.
• Do not allow the maximum vial temperature to be closer than 10°C to the
boiling point of any solvent in the sample.
•The Vial Temp Incr function increases the temperature from run to run in
the headspace vial only. The loop and transfer line temperatures remain at
their original setpoints. Be sure to set the loop and transfer line
temperatures so they exceed the highest temperature the vial is
programmed to reach. Take note of any maximum temperature on the
transfer line you are using.
• Chain methods are not allowed if either the Vial Temp Incr or the Vial
Equilibration Incr is set to a non-zero value.
• If your combination of vial temperature step and number of vials to run
would set the oven temperature above it maximum (for example, the open
temperature is 155°C, the step is 10°C, and you run 6 vials), you will see a
warning message. If you start the run anyway, the analysis will stop when
the oven reaches 200°C.
G1883 Adv Fctn, 7, Enter
To activate/deactivate Parameter Increment, press Adv Fctn, 7, and Enter. You
will see
PARAMETER INCR. NO or PARAMERTER INCR. YES
Press the 1 (YES) key to activate parameter incrementing, or 0 (NO) to
deactivate it.
When enabled, you can use the cursor keys to scroll to the displays to set the
vial temperature and vial equilibration time step increments:
VIAL TEMP INCR 0.0
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