Vials and Bottles 6
Installation, Operation, and Maintenance 121
Part 2, Operation
Using Two Injectors (5890, 6890 only)
With two injectors mounted on the GC, you can use the front injector or the
back injector or both injectors simultaneously.
Two-injector configurations have the following characteristics:
• The system sends one injector ready signal to the GC when both injectors
are ready and one start signal at the beginning of the injection stroke.
• The two injectors inject simultaneously.
With a tray
Set run parameters for each injector in the sequence. When you set up the run
parameters, you must identify which data channel is for which injector on a
6890 GC.
• When using a 6890 Series GC for sampler control, you assign the channel
when you set up the sequence.
• When using the Agilent ChemStation for sampler control, you assign the
channel when defining the instruments.
When both injectors have samples, they begin the injection cycle together,
including any sample washes. After they have completed the specified
sampling steps, they inject the samples. After the injection, both injectors go
through the solvent wash cycle. When both injectors are done, the tray picks
up the sample vial from the front injector and returns it to its original position
on the tray, then picks up the vial from the back injector and returns it to its
original position.
Without a tray
The injectors go through the same motions as with a tray. The injectors inject
samples from position 1 first, followed by samples from the remaining sample
vial positions. If the two injectors do not have the same number of samples,
the injector that completes its sequence first remains idle while the other
finishes.
To Next Page
Loading...
Need help?
General
