Standard Extraction - Agilent Technologies 7697A Advanced Operation Manual

Standard extraction

Advanced Operation
Vial pressurization gas
Vent
SV1
PV2
Transfer line
Figure 9 HS sampler flows, GC carrier mode
In this mode, the HS performs one extraction and one
injection per vial puncture. After the vial equilibrates, the
HS checks system readiness. If the system is ready, or if the
readiness sequence action is continue, the HS punctures the
vial. The HS pressurizes the vial and extracts the sample
How the 7697A Headspace Sampler Works
PS - Pressure sensor
FS - Flow sensor
SV - Switching valve
Carrier gas
PV - Proportional valve
Flow control module
SV2
PV1
PS
Six port valve
3
Sample loop
2
1
2
PS
FS
4
5
6
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