The Keypad
Keys and Their Functions
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range of values for the cycle time is 1.0 to 999 minutes. The recommended
minimum cycle time is 2.5 minutes.
VIAL EQ TIME (Vial Equilibration Time)
Time the vial spends in the oven heating. The length of time you should use
depends on the type of sample (solid, liquid), the amount of sample, and the
partition coefficient of the analytes. The sample may or may not come to
equilibrium.
• The allowed range of values is 0.00 to 999.9 minutes.
• The sampler may extend the actual equilibration time if more time is
needed to put the next vial into the carousel before starting the next run.
• The recommended minimum time is 5.0 minutes.
PRESSURIZ. TIME (Pressurization Time)
Time during which the vial pressurization gas is introduced into the sample
vial. The allowed range of values is from 0.00 to 99.99 minutes.
LOOP FILL TIME
Time in which the headspace/vial pressurization gas mixture passes through
the sample loop to vent. The allowed range of values is from
0.00 to 99.99 minutes.
LOOP EQ. TIME (Loop Equilibration Time)
Time to allow the analytes in the sample loop to equilibrate to the higher loop
temperature and to allow pressure and flow in the loop to stabilize. The
allowed range of values is from 0.00 to 99.99 minutes.
INJECT TIME
Time in which the gases in the sample loop are injected into the GC. This time
must be sufficient for complete sample transfer. If the time is too short, the
analysis will lose sensitivity because not all the sample will be transferred. It is
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