Description of TF16 / TF16-N sensors
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optek-Manual--1004-2006-02--TF16-US-2011-06-20
www.optek.com
4 Description of TF16 / TF16-N sensors
The TF16 model is a high precision dual channel scattered light turbidimeter. It
measures direct light and light scatterd from particles in the process medium at
an angle of 11°. The sensor is made entirely of stainless steel and designed for
direct installation into pipelines.
Fig. 1 TF16
The following are the main sensor components:
Fig. 2 Schematic TF16
1. Sensor body
2. Windows
3. Optics module
4. Detector (direct light)
5. Detector (scattered light)
6. Optics module
7. Lamp
Its modular construction offers maximum flexibility in adapting to the process,
without affecting the property of measurement. An appropriately defined light
beam penetrates the process medium. The light scattered from particles in the
process medium, e. g. traces of suspended solids, immiscible liquids or gas
bubbles, is detected by eight hermetically sealed silicon photodiodes at an angle
of 11°. Simultaneously, the unscattered light is detected as direct light by
another photodiode. The receiver optics design guarantees that extraneous
lights created inside the sensor body are not included in measurements.
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