Table of Contents
Advertisement
Vent the source region prior to performing maintenance on the outer ion
source. To minimize the time required to vent and pump the source, isolate
the source fine pump from the source region by using the source isolation
valve. The source fine pump is backed by a fore pump.
The analyzer region usually remains under fine vacuum. It has two fine
pumps backed by a single fore pump.
There is also an inlets fore pump, used to pump the gas inlets, valves, and
interface regions.
The fore pumping is provided by an oil-based rotary vane pump (supplied as
standard) or an optional oil-free scroll pump.
The fine pumping is provided by an oil-based diffusion pump (supplied as
standard) or an optional turbomolecular pump. The oil in the diffusion pump
heats to the boiling point and so there are heating and cooling periods
associated with the pump operation. The turbomolecular pump is an oil-free
mechanical pump that provides faster venting and pumping times than a
diffusion pump.
If a fore pump stops for any reason, the associated fine pump automatically
turns off.
MassLynx control system
MassLynx™ software controls. MassLynx also controls the instrument, the
GC system, and the autosampler. A second PC (the embedded PC [EPC],
located in the instrument), acquires and processes the data, as well as directly
controlling the electronics. The MassLynx PC and the EPC communicate via a
network link.
Analog inputs allow data acquisition from optional conventional GC detectors,
such as a flame ionization detector (FID).
You can perform the following processes through the MassLynx software:
•
Configuring the instrument.
•
Creating inlet and MS methods that define operating parameters for a
run.
•
Tuning and calibrating the instrument.
•
Running samples.
•
Monitoring the run.
MassLynx control system
1-5
Advertisement
Table of Contents
Troubleshooting
