Thermo Scientific FOCUS GC, Instruction Manual

Page: 75 / 356

Chapter 3
Carrier Gas Regulation Gas Control
Instruction Manual 75
Carrier Gas Regulation
This paragraph describes the automatic Digital Pressure and Flow Control
(DPFC) of the FOCUS GC. You control the gas flow by programming parameters
in the carrier gas menu.
The DPFC module, provides:
• Flow and pressure control
• Gas saver function
You enter the gas control setpoints in the
Carrier
menu. Refer to Carrier Gas
Parameters .
WARNING! Input pressure to DPFC should ensure a minimum pressure 50 kPa higher than the
maximum carrier pressure required by the application.
The maximum input pressure to DPFC is 1000 kPa.
Detector Gas Regulation
The detector gases control module has conventional pneumatic regulators which
and providescontrol for the detector gases.
WARNING! Pressure of the supply gas lines should be set to a minimum of 400 kPa (60 psi) to
ensure the regulation of detector gases.
Maximum input pressure to FOCUS GC (from supply gas lines) is 1000 kPa (145 psi).
The pressure regulation is accessible from outside the instrument. The adjustment
of the detector gases is done in factory prior shipment.
According to the detector in use refer to:
• FID Gases
• TCD Gases