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System Diagrams
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Model 3250 System
Block Diagrams
The following block diagrams illustrate the simple flow
path and easy change-over design of the Model 3250 thermal desorption
system.
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Thermal Desorption Mode
In the thermal desorption
mode, the tube desorption flow is supplied by an auxiliary
flow controller, while the column flow is maintained at all
times by the PCM (pneumatics control module). The inlet EPC
is set to OFF. |
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Liquid Injection (Split/splitless)
Mode
In the liquid injection
mode, the normal inlet EPC supplies column
pressure/flow. The PCM is turned OFF or set to a
low flow (purge) value. The autosample is
converted to liquid injections by simply swapping the
syringe adapters. |
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