Agilent Technologies 7697A Advanced Operation Manual page 73

Advanced Operation
Vial pressurization gas
Vent
SV1
PV2
Transfer line
Figure 14 Gas flow paths in the standard configuration
When using GC Control for carrier gas, the HS provides no
method settings for carrier gas. The sample is injected by
switching the sample loop into the carrier gas stream. The
HS displays a pressure reading for the carrier gas, but
cannot determine a flow rate.
If using the optional 7697A Carrier Gas EPC Module
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
5
Configuration
PS
FS
4
5
6
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