1-2 | Model 931S / Model 932S UV Analyzers
About the Analyzer
The Model 931S and Model 932S Analyzers are comprised of (see Figure
1-1):
• Two ultraviolet light sources (source lamps)
• Source lamp filters:
Model 931S Single-Species Analyzers
A Filter Block containing two wavelength-selective filters
Model 932S Multi-Species Analyzers
A Chopper Wheel (Filter Wheel) containing up to six interference
filters
• Beam Splitter
• Front-surfaced mirrors
• Gas Measuring Cell
• Two matched Photodetectors
Figure 1-1.
Analytical block
diagram.
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