Agilent Technologies G6600-90006 - Manual (Page 25)

Operation and Maintenance Manual 25
Description of Major Components
Dual Plasma Burner
The Dual Plasma Burner consists of a tower assembly that contains an outer
sheath for burn protection, a heating element, thermocouple, and combustion
tubes. In the SCD, conversion of sulfur containing compounds to SO occurs
within the ceramic reaction chamber housed in the Burner assembly and
potentially interfering hydrocarbons are oxidized to CO
2
and H
2
O, with air as
the oxidant. In the NCD, oxygen is used as the oxidant.
A fitting is located on top of the Burner. The vacuum line from the Detector
box is connected directly to the top of this fitting and H2 is input to the longer
side of this fitting. The air inlet is connected to the base of the Burner.
The Burner is mounted onto the GC by a model-specific mounting kit (see
www.Agilent.com/chem or contact Agilent for the most current information).
The GC column is inserted into the Burner using a 1/32" knurled nut and fused
silica adapter ferrule.
A cross-section illustration of the Dual Plasma Burner for the 355 SCD is
shown in
Figure 1 and for the 255 NCD is shown in Figure 2 .