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MEASURING PRINCIPLE
2 - 2
ETC00303(1) BINOS E e (2.0) 11/00
Rosemount Analytical
IR MEASUREMENT
Fig. 2-1: Measuring Principle for NDIR / UV Measurement
8 Measuring side
9 Reference side
10 Filter cell without dividing wall
(for IFC measurement with optical filters)
11 Window
12 Pneumatic or pyroelectrical (solid-state) detector
13 VIS / UV semiconductor detector
14 Preamplifier
1 IR source with reflector
2 VIS / UV source with reflector
3 Chopper wheel
4 Eddy current drive
5 Filter cell with dividing wall (IR channel)
6 Filter cell with dividing wall (UV channel)
7 Analysis cell
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