Agilent Technologies Varian CP-8400 Operator's Manual page 36

Autoinjector
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Operation
Injection volume 1 & 2 specifies the volume of the sample that will be
injected for the first and second injection respectively. (The First Injector
Used parameter defines which of the two injector positions is injected
into first.) This volume will be either 0.1 to 5 µL in 0.1 µL increments or,
0.1 to 10 µL in 0.1 µL increments, or 1 to 100 µL in 1 µL increments,
depending on the volume of the installed syringe. The default value is
1.0. Note that the second injection volume is only used when Both is
selected for the injector position. It is ignored if the Method Sequence
Table line specifies either Position 1 or Position 2.
Injector position will be set to Pos.1 if the Setup parameter instructs the
system to inject from the position 1 injector only; Pos.2 if the Setup
parameter instructs the system to inject from position 2 only, or
selectable by the user to any of Pos.1, Pos.2, or Both if the Setup
parameter is set to both. Selecting Both during the Setup process causes
a second page to be used in the SampleList. The default value is 1.
First Injector Used (1, 2) – This parameter defines which of the injectors
will be used to inject into first (using the first injection volume) and thus
start the run. For instance if you were to set the First Injector Used to 2,
the system would use the first injection volume to inject into injector 2
followed by an injection using the second injection volume into injector 1.
The default value is 1.
Use Injection Delay? (Yes or No) – This parameter is only used if the
Injector Position is set to Both. Selecting Yes for this parameter will
cause the Delay Between Injections time to be used. Selecting No will
cause the second injection to be made as soon as the AutoSampler has
sampled the second vial. The default value is No.
Delay Between Injections (0.5–10 min) – The AutoSampler will
immediately sample the vial for the subsequent injection and the syringe
sled will advance to the top of its travel and position itself over the
second injector. Once the Run clock, started at the time of the first
injection, reaches the set time, the injector sled will descend and the
second injection made. If the set delay expires before the AutoSampler is
ready to inject, the second injection will be made as soon as the
AutoSampler is ready and the operator will be informed. The default
value is 1 minute.
Advance for Second Injection? (Yes or No) – Selecting Yes for this
parameter will cause the AutoSampler to advance to the next vial in the
specified vial range for the second injection. When all of the sampling
actions for the pair of vials is complete, the CP-8400 will skip the next
vial in the range and proceed to the next vial after that. Thus if the
AutoSampler samples from vials 10 and 11, it will advance to vials 12
and 13 (or what ever vials are next in the carrousel) for the next injection.
CP-8400 AutoSampler & CP-8410 AutoInjector
33

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