Agilent Technologies 8890 User Manual

12 Resource Conservation
192 Operation Manual
[[Wake and condition methods]
[[The GC can be programmed to wake in one of several ways:
• [[By loading the last Active Method used before going to sleep]
• [By loading the [Wake] method]
• [By running a method called [Condition], then loading the last Active Method]
• [By running a method called [Condition], then loading the [Wake] method]]]
NOTE
[]
[
The GC can also store wake, sleep, and condition methods which have been created by a
connected data system. Although these methods are not visually displayed on the GC, once
downloaded to the GC from the data system, they can be used by the GC scheduler
functionality.
]
[]
[These choices provide flexibility in how you prepare the GC after a sleep cycle. ]
[[A [Wake] method] sets a temperatures and flows. The oven temperature program is
isothermal since the GC does not start a run. When the GC loads a [Wake] method, it remains
at those settings until you load another method using the touchscreen, data system, or by
starting a sequence.]
[A [Wake] method can include any settings, however it typically will do the following:]
• [[[Restore inlet, detector, column, and transfer line flows.]
• [Restore temperatures.]
• [Ignite the FID or FPD+[] flame.]
• [Restore inlet modes.]]]
[ECD] • [[Reduce makeup flow. Try using 15–20 mL/min and test results.]
• [Maintain temperature to avoid long recovery/stabilization times.]]
[NPD] • [[Maintain flows and temperatures. Sleep not recommended due to recovery times and also
thermal cycling can reduce bead life.]]
[TCD] • [[Leave filament on.]
• [Leave block temperature on. ]
• [Reduce reference and makeup flows.]]
[[Other devices]] []
[Valve box] • [[Reduce temperature. (Keep valve box temperature high enough to prevent sample
condensation, if applicable.)]]
[Aux thermal zones] • [[Reduce or turn off. Also refer to the manuals for any connected device (for example, a
connected MSD).]]
[Aux pressures or flows] • [[Reduce or turn off as appropriate for connected columns, transfer lines, and so forth. Always
refer to the manual for any connected device or instrument (for example, a connected MSD), to
maintain at least the minimum recommended flows or pressures.]]
Table 21 Sleep method recommendations[ (continued)]
[GC Component] [Comment]

Agilent Technologies 8890 Specifications

General

Brand	Agilent Technologies
Model	8890
Category	Laboratory Equipment
Language	English