Thermo Scientific FOCUS GC, Instruction Manual

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Chapter 1
FOCUS GC Description
Instrument Overview
28 Instruction Manual
— Column Evaluation
To to automatically calculate the column constant.
— Leak Check
To keep the system under control.
— Gas Saver Function
To reduce the split flow after an injection to avoid the waste of expensive
gases.
Detector Gas Control
Detector gases are controlled through a conventional pneumatic control module
(DGFC) mounted in the pneumatic compartment. The pneumatic circuits have
three flow regulators in case of an FID and two flow regulator in case of a TCD.
The adjustment is done in factory prior shipment, and remains always at the set
flow. DGFC gas flow can be automatically switched on and off by using the
FOCUS GC keypad.
Refer to...
Chapter 3, Gas Control .
Column Oven
The FOCUS GC column oven has a high degree of thermal stability and fast
heating and cooling. The air circulation in the oven ensures the column is kept in a
thermally homogenous and stable zone. This provides more precise analytical
performance and helps prevent chromatogram peak distortion.
Refer To…
Chapter 4. Column Oven .
Injector
FOCUS GC is designed to operate with the following injectors:
Split/Splitless (S/SL) Injector
This injector minimizes heavy component discrimination with optimized sample
transfer to the column. You can use capillary and wide-bore columns with the