Agilent 6890/6850 GCs: InjectorCommands and Tips for Third-Party Devices
Agilent 6890/6850 GCs: Injector
The following properties are available (please note that the display Filter level determines which properties are displayed):
|
Property |
Default |
Description |
|
6890 GC |
|
|
|
Mode |
² (Demo |
Injection mode. Must be set to on_column for cooling on the column inlet. Otherwise, set to Normal. |
|
6850 and 6890 GCs |
||
|
Depth |
0.0 mm |
Position of the needle in the vial. The default position is about 3.6 mm from the bottom of the vial. The default position is the reference of all other positions. |
|
Fan |
² (Demo |
Turns the injector fan on and off. |
|
FirmwareVersion |
- |
Firmware version (6 characters, read-only) |
|
Inject |
|
Injects the sample. The values Position and Volume can only be used during manual injections. Injection is allowed at t=0.000 min only. |
|
InjectWaitTime |
0.0 s |
Time between the inject command and the inject response. |
|
ModelNo |
- |
Model number (8 characters, read-only) |
|
Position |
1 |
Current sample position on the tablet. |
|
Post-a |
0 |
Indicates how often the syringe is rinsed with solvent from the solvent reservoir A after the injection. |
|
Post-b |
0 |
Indicates how often the syringe is rinsed with solvent from the solvent reservoir B after the injection. |
|
PostDwell |
|
Time that the needle remains in the inlet after the injection before it is withdrawn. |
|
Pre-a |
0 |
Indicates how often the syringe is rinsed with solvent from the solvent reservoir A prior to the injection. |
|
Pre-b |
0 |
Indicates how often the syringe is rinsed with solvent from the solvent reservoir B prior to the injection. |
|
PreDwell |
0.00 min |
Time that the needle remains in the inlet before the piston moves to inject the sample. |
|
Prewash |
0 |
Indicates how often the syringe is rinsed with the sample prior to the injection. |
|
Pumps |
0 |
Indicates the how often the pressure plunger of the syringe is moved up and down while the needle is in the sample. This is to expel gas bubbles and to enhance the reproducibility. |
|
Speed |
0 |
Average piston speed³ |
|
State |
Off |
Indicates whether the autosampler has injected (read-only). |
|
Syringe |
0 |
Indicates the syringe type as specified in the Server Configuration program. |
|
Viscosity |
0 s |
Number of seconds the pressure plunger of the syringe pauses after the pump and injection strokes. This pause allows viscous samples to flow into the vacuum created in the syringe. |
|
Volume |
2 µl |
Specifies the amount of sample to be injected (in µl). The value range provided is from 2% of the smallest possible syringe volume to 50% of the largest possible syringe volume. Also see Syringe. |
|
Waste |
² (Demo |
Specifies which waste bottles shall be used (alternating). |
Notes:
² When connecting, Chromeleon reads the value from the instrument and accepts it as default.
³ For information about which plunger speed can be achieved with the Speed command for the different syringes, refer to the table below:
|
Syringe (µl) |
Plunger Speed (µl/min) |
|
|
|
Fast |
Slow |
|
5 |
3000 |
150 |
|
10 |
6000 |
300 |
|
25 |
15000 |
750 |
|
50 |
30000 |
1500 |
|
100 |
60000 |
3000 |
|
250 |
15000000 |
750000 |
|
500 |
30000000 |
1500000 |
In addition, the following commands are available, depending on the filter level:
|
Command |
Description |
|
EraseErrorLog |
Deletes the sample error log. |
|
StopInject |
Stops the running injection. |
The Administrator Help section provides installation instructions for the 6890 and 6850 GCs; refer to Hardware Installation:
Agilent 6890 GC: Installation
Agilent 6850 GC: Installation