Technical data

Operation and Maintenance Manual 11
Contents
1 Introduction
2 System Description
Specifications 20
Technical Information — 355 SCD 20
Technical Information — 255 NCD 20
Physical Specifications 21
Theory of Operation 23
Sulfur Chemiluminescence Detector 23
Nitrogen Chemiluminescence Detector 23
Dual Plasma Controller 24
Description of Major Components 25
Dual Plasma Burner 25
Figure 1. Cross-Section of the Dual Plasma Burner for the 355 SCD 26
Figure 2. Cross-Section of the Dual Plasma Burner for the 255 NCD 27
Dual Plasma Controller 27
Ozone Generator 28
Chemiluminescence Reaction Cell and Photomultiplier Tube 28
Figure 3. 355 SCD Left Side 29
Figure 4. 355 SCD Right Side 30
Figure 5. 255 NCD Left Side View 31
Figure 6. 255 NCD Right Side View 32
Pressure Transducer 32
Vacuum Pump 32
Chemical Trap 33
Oil Coalescing Filter 33
FID Adapter (Optional) 33
NCD Reaction Cell 33
NCD Photomultiplier Tube and Cooler 34
Figure 7. Schematic for 355 SCD 35
Figure 8. Schematic for 255 NCD, in Nitrogen Mode 36
Figure 9. Schematic for 255 NCD, in Nitrosamine Mode 37