16 Advanced Operation
2 How the 7697A Headspace Sampler Works
How the HS Processes a Sample Vial
Figure 4 shows the workflow for a vial processed by the 12
vial model HS.
Figure 4 Basic 7697A HS vial process flow, 12 vial model
Figure 5 shows the workflow for a vial processed by the 111
vial model HS (with tray).
Prepare sample.
Cap sample in vial.
Place vial in
carousel
Lift vial into oven.
Equilibrate.
Lift vial onto sample
probe.
Pressurize vial.
Perform dynamic
leak test.
Remove vial from
probe.
Lower vial into
carousel.
User tasks
Perform extractions and injections:
If Single:
-Fill sample loop.
-Start run, vent vial (optional)
If Concentrated:
-Fill sample loop, inject, repeat
(pressurize, test, fill loop, inject).
-Start run, vent vial (optional)
If Multiple extractions:
-Fill sample loop.
-Start run, vent vial (optional)
-Repeat.