System Components - Agilent Technologies 6890 Series Operating Manual

Part 1. Introducing the Agilent PTV

System components

1. The pneumatics module, located at the top rear of the GC.
2. The inlet body, always mounted in the front inlet position.
3. The trap, which is in the split line and placed to the left of the pneumatics
carrier at the top rear of the chromatograph.
4. The coolant control valve. For liquid nitrogen, this valve is on the left outside
wall of the oven. For liquid carbon dioxide, it is in the pneumatics carrier.
These valves are not interchangeable—if you change coolants, you must also
change all of the coolant plumbing including the valve and inlet jacket.
5. The thermocouple conversion board. It converts thermocouple readings
from the inlet for use by the GC and is near the trap.
Carrier
supply
Figure 17 PTV system components
Split vent
PV2
Sol
PV1
Pneumatics module
PV Proportional valve
SPR Septum purge regulator
Sol Solenoid valve
PS Pressure sensor
FS Flow sensor
CCV Cryogenic coolant valve
The Programmable Temperature Vaporization Inlet
Septum purge vent
SPR
PS
Trap
FS
Alternate purge flow paths
System components
Inlet
CCV
Coolant
supply
With septum head
With septumless head
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