Model MicroCEM
Instruction Manual
Overall NDIR Method
In the case of
depending on the application and need for reduction of influences. Then the infrared radiation enters the analysis cells from which it is focused by filter cells onto the corresponding detector. The preamplifier detector output signal is then converted into the analytical results expressed directly in the appropriate physical concentration units such as percent volume, ppm, mg/Nm3, etc. This is shown in Figure
MOTOR
Light Source |
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Chopper Blade |
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| Duplex Filter Disc | |||||
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| Adapter Cell | |||
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| (high measuring range) | |||
Analysis Cell |
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| Analysis Cell | |||
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| (undivided) | |||||
(measuring side) |
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| Filter Cell | |||||
Analysis Cell |
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(reference side) |
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| Preamplifier | ||||
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| Pyroelectric Detector | ||||||||
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Filter Cell |
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Gas Detector
Preamplifier
Chopper Blade
Figure
Rosemount Analytical Inc. A Division of Emerson Process Management | Description and Specifications |