11 Configurationï€
Operation Manual 163
Valve Configuration
Valve configuration provides the ability to specify valve types, loop volumes, step times, and
BCD inversion settings. BCD inversion allows for changing the BCD input (1’s become 0’s and
0’s become 1’s). This feature accommodates coding convention differences between valve
manufacturers.
Note that the Valves page appears regardless of whether any valves are currently installed in
the GC.
To configure valves
1 Select Settings > Configuration > Valves. See Figure 58.
Figure 58. Valves page
2 Use the Valve Type drop-down list box to select the corresponding valve type. The possible
valve types are:
• Gas Sampling Two-position (load and inject) valve. In load position, an external sample
stream flows through an attached (gas sampling) or internal (liquid sampling) loop and
out to waste. In inject position, the filled sampling loop is inserted into the carrier gas
stream. When the valve switches from Load to Inject, a run starts if one is not already in
progress.
• Switching Two-position valve with four, six, or more ports. These are general-purpose
valves used for such tasks as column selection, column isolation, and many others.
• Multi-position Also called a stream selection valve. It selects one from a number of gas
streams and feeds it to a sampling valve. The actuator may be ratchet- (advances the
valve one position each time it is activated) or motor-driven.
• Other Something else.
• Not installed Self-explanatory.
To Next Page
Loading...
Need help?
General
