Varian CP-3800 GC: InjectorCommands and Tips for Third-Party Devices
Varian CP-3800 GC: Injector
In addition to the 
General Device Commands, the Varian CP-3800 GC supports the following injector commands and properties (please note that the display Filter level determines which commands and properties are displayed):
|
Property |
Range/Values |
Description |
|
ConstantFlow |
0.0 - 50.0 ml/min |
(Only if a type 1 electronic flow control (EFC) is installed) Nominal value for a constant flow rate. |
|
ConstantFlowMode |
On, Off |
(Only if an EFC type 1 is installed) Enables or disables ConstantFlow. If ConstantFlowMode is disabled and Pressure.Nominal is not in the allowed range, the nominal pressure is set to the minimum pressure of 0.007 bar. |
|
Cryo |
On, Off |
(Only if a cooling element is installed) Turns the cooling element on or off. |
|
CryoTimeout |
Off, 0.01 - 999.99 min |
(Only if a cooling element is installed) Time that the GC waits before turning off the cooling if no sample was injected. |
|
CryoThreshold |
30 - 450°C |
(Only if a cooling element is installed) Temperature above which the GC shall use cryo for cooling. |
|
Description |
On-Column Injector, |
Indicates the inlet type*. EFC_only means that only EFC is installed (without injector). |
|
EFCFault |
Fault, OK |
(Only if electronic flow control (EFC) is installed) Indicates an error in the injector EFC. |
|
EFCReady |
Ready, NotReady |
(Only if EFC is installed) Indicates whether the injector EFC has reached the target temperature and/or flow and is ready, |
|
EFCType |
None, 1, 3, 4, Generic (Reserved) |
Indicates the type of injector electronic flow control (EFC) |
|
Flow |
|
Properties related to the total flow |
|
Flow. Value |
1.0 - 1000.0 ml/min |
(Only if EFC type 1 and 3 is installed) Indicates the current flow*. |
|
Flow.Nominal |
0.1 - 100.0 ml/min |
(Only if EFC type 3 is installed) Sets the target flow. The pressure range can be programmed; the allowed range is 0.007 to 27.576 bar/min in 8 increments (including the first value). |
|
GasSaverFlow |
1 - 100 ml/min |
(Only if EFC type 1 is installed) Sets the minimum gas flow to which the flow is reduced. |
|
GasSaverTimeout |
0.00 .. 999.99 min |
(Only if EFC type 1 is installed) Time after which the gas flow is reduced to the minimum gas flow (see GasSaverFlow). |
|
Mode |
Split, Splitless |
(Only for 1079 and 1177 with EFC) Indicates split or splitless mode. |
|
OvenFault˛ |
Fault, OK |
Fault indicates a fault in the injector oven. |
|
OvenReady˛ |
Ready, NotReady |
Ready indicates whether the injector oven reached the target temperature and is ready. |
|
Pressure |
|
Properties related to the column pressure. |
|
Pressure.Value |
0.007 - 6.894 bar |
(Only if EFC type 1 and 3 is installed) Indicates the current pressure in the column head*. |
|
Pressure.Nominal |
0.007 - 6.894 bar |
(Only if EFC type 1 is installed) Sets the injector target pressure. The pressure range can be programmed; the allowed range is 0.007 to 27.576 bar/min in 8 increments (including the first value). |
|
PulseEnable |
On, Off |
(Only if EFC type 1 is installed) Enables or disables the pressure pulse. |
|
PulsePressure |
0.007 - 6.894 bar |
(Only if EFC type 1 is installed) Sets the target value for the pressure pulse. |
|
PulseTime |
0.01 - 5.00 min |
(Only if EFC type 1 is installed) Sets the duration of the pressure pulse. |
|
SplitRatio |
1 - 10000 |
(Only for the 1079 and 1177 with EFC). Sets the split ratio. The ratio can be programmed; a maximum of six increments (including the first value) is allowed. An error message appears if the SplitRatio is set for SplitMode = Splitless. |
|
SplitlessVentFlow |
0 - 500 ml/min |
(Only if EFC type 1 is installed) System flow when the split valve is closed. |
|
Temperature˛ |
|
Properties related to the injector temperature |
|
Temperature. |
-99°C - 450°C |
Indicates the current temperature*. |
|
Temperature. |
-99°C - UpperLimit |
Sets the target temperature. |
|
Temperature. |
50 - 450°C |
If the temperature exceeds this value, Chromeleon aborts the batch and starts emergency handling. |
|
Type |
1041, 1079, 1177, |
Indicates the inlet type*. EFC_only means that only EFC is installed (without injector). |
Notes:
* These properties are read-only.
˛ These properties are available only if a heating zone was specified for the associated injector in the Server Configuration program.
For installation details, refer to Hardware Installation: Installing and Controlling Third-Party Devices 
Varian CP-3800 GC: Installation in the Administrator Help section.