Thermo Electron Corporation Model 42i Low Source Instruction Manual 8-1
Chapter 8 System Description
This chapter describes the function and location of the system components,
provides an overview of the software structure, and includes a description of
the system electronics and input/output connections and functions.
• “Hardware” on page 8-1 describes the analyzer components.
• “Software” on page 8-4 provides an overview of the software
organization and detailed information on the software tasks.
• “Electronics” on page 8-6 describes the system boards, assemblies, and
connectors.
• “I/O Components” on page 8-9 describes the input and output
communication functions and components.
Hardware Model 42i Low Source hardware components (Figure 8-1) include:
•NO
2
-to-NO converter
•Mode solenoid
• Reaction chamber
• Optical filter
• Pressure transducer
• Ozonator
• Ozone flow switch
• Photomultiplier tube
• Photomultiplier tube cooler
• Pump
• Sample capillary
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