Leak Testing: General Information - Agilent Technologies G1289 Operating Manual

Leak Testing: General Information

Refer to Figure 26 and Figure 27, which show the flow paths for all gases used
in each type of headspace installation.
Vial pressure
gas in
PS
Aux. bleed
fitting
Legend
FS Flow sensor
Pressure sensor
PS
S1 Pressurize valve
S2 Vent valve
Figure 26. Flow paths for a G1289 to 6890 GC installation
Aux EPC
Module
S2
S1
Flow
1
6
restrictor
5
4
Needle
Headspace vial
Headspace Sampler
Flow paths before GC prep-run
EPC Flow Module
ZDV union
Sample
loop
2
3
ZDV
union
Column
Maintaining the Instrument
Leak Testing: General Information
Carrier gas in
(Total flow
200 ml/min)
PCV1
FS
Septum purge
PS
3 ml/min
Split vent flow
Purge
PCV2
valve
Split vent trap
Column flow
4 ml/min
GC
103