How it works – Agilent Technologies G3180B User Manual
Page 9
Introduction
1
Installation and Operation Guide
9
How It Works
The splitter divides the effluent from a column between two different
detectors. The detectors can be operating at different pressures, that is, any
mix of the following can be used:
• Atmospheric pressure
FID (flame ionization detector)
TCD (thermal conductivity detector)
NPD (nitrogen phosphorus detector)
ECD (electron capture detector)
FPD (flame photometric detector)
• Below atmospheric pressure
MSD (mass selective detector)
• Above atmospheric pressure
AED (atomic emission detector)
The split ratio is determined by the length and diameter of tubing connecting
the splitter to the detectors. Tubing dimensions may be determined from
on page 26 in this manual or from a spreadsheet calculator that is
included for calculating tubing dimensions for special situations.
Figure 1 shows the plumbing configuration for the G3180B splitter.
Figure 1
Splitter plumbing
Restrictor 1
Restrictor 2
Constant pressure
makeup gas supply
Column
Splitter
GC oven
Det 1
Det 2
Inlet