Description of AF16-F / AF16-N sensors
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optek-Manual--1004-2001-02--AF16-US-2011-01-04
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4 Description of AF16-F / AF16-N sensors
This sensor is a high precision absorption sensor. It measures attenuation of
light passing through the process medium. The sensor was designed for direct
installation into pipelines.
Fig. 1 AF16-F / AF16-N
The following are the main sensor components:
Fig. 2 Schematic AF16-F / AF16-N
1. Sensor body
2. Windows
3. Filter (VIS or NIR)
4. Detector
5. Optics module
6. Lamp module
Its modular construction offers maximum flexibility in adapting to the process,
without affecting the property of measurement. A precisely defined, constant
light beam penetrates the process medium. A hermetically sealed silicon
photodiode measures intensity of incoming and optically filtered light and
supplies the converter with it in form of photocurrent.
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