Siemens PGC 302 Edition II Manual page 141

6-way ceramic valve
6-way ceramic valve
The 6-way ceramic valve can be used to inject gas-
eous samples onto the column.
Mounting
hole
The 6 paths of the valve are pneumatically switched
such that 3 paths are simultaneous open in the valve. If
gas is to be injected, an injection volume assembly is
present at one valve path. This is switched into the sam-
ple gas path and is filled with sample. The injection
volume assembly is subsequently connected to the car-
rier gas path. The carrier gas flushes the contents of the
injection volume assembly onto the column.
2 - XII
Technical data
Injection volume
Control gas
- Piping
- Control gas pressure
- Type of control
- Pulse length for switchover
Test
Max. carrier gas and sample pressure
hole
Max. temperature
Number of cycles without maintenance
Connection pipes
- Length
- Outer diameter
- Volume
Dead volume
Purging gas
Leak rate: pressure drop with 4 bar H 2
Linking of connections
Pressure at connection 1-2
1 connected to 2
3 connected to 4
5 connected to 6
Control gas
1-6
Installation
The ceramic valve has one mounting hole. It is fitted in
the oven using a long screw M4x50.
80 µl ... 4 ml
2 x 0.3 mm
3 ... 6 bar
Pulse
0.005 min
4 bar
180 °C
Typically 500 000
200 mm
1.0 mm
40 µl
2 µl
10 ... 20 ml/min
< 50 mbar/sec
Pressure at connection 1-6
6 connected to 1
2 connected to 3
4 connected to 5
Purging gas
Control gas
6 1
5 2
4 3 Mounting
hole
Register8.vp
1-2
Stand: 20.11.2000