Operation
What happens during a run?
66
What happens during a run?
In the following description, the run parameters that determine the automatic
liquid sampler’s actions are surrounded by quotes (“run parameter”). From the
point when you start the run, the automatic liquid sampler does the following:
1. The syringe carriage, plunger carrier, injector turret, tray arm, and gripper
move to their home positions.
2. With a tray, the tray gripper picks up a vial from the “position of first vial”
and delivers it to the injector turret associated with sample position.”
Without a tray, the samples are already in the injector turret.
3. If this is the first sequence after the power is turned on, the injector goes
through a solvent “prewash” and pauses for “viscosity delay.”
4. The injector lowers the syringe into the vial (“sampling depth”). The
injector fills the syringe with sample, pauses for “viscosity delay,” and
dispenses it into one of the waste bottles according to the “number of
sample washes.”
5. The injector fills the syringe with sample and dispenses it back into the
sample vial according to the “number of pumps.” The syringe plunger may
pause at the top of the pump stroke according to the “viscosity delay.”
6. The injector fills the syringe with the “volume/stop” of sample. The syringe
plunger may pause at the top of the injection stroke according to the
“viscosity” then draws up one stop of air for “predwell.” The injector then
lowers the syringe into the injection port, remains for the “preinjection
dwell,” injects it, applying “plunger speed”, and holds it for the
“postinjection dwell time.”
7. The injector fills the syringe with solvent from solvent bottle A, pauses for
“viscous delay” with the syringe over the waste bottle, and dispenses it
into one of the waste bottles according to the “number of solvent A
washes.”
8. The injector fills the syringe with solvent from solvent bottle B, pauses for
“viscosity delay” with the syringe over the waste bottle, and dispenses it
into the same waste bottle according to the “number of solvent B washes.”
9. With a tray, the tray gripper picks up the vial and returns it to its original
position in one of the tray quadrants.
To Next Page
Loading...
Need help?
General
