The optimum viewing distance is 8” (200mm) from the bottom of the sensor but any distance between
6” and 12” (150 - 300mm) is acceptable. Variations in product pass height of +/- 1” (25mm) around the
8’’ (200mm) nominal are permissible.
4.7 Reflections from the Material Surface
It is essential to avoid specular reflections of the transmitted light from the product. Powdered and
granular products cause no problems and the sensor light beam may be mounted at any angle to the top
surface of the product. The closer the beam is to 90º from the surface the better the reflected signal
strengths. Highly reflective and shiny sheet materials require that the sensor be angled so that the light
beam is at approx. 80º-85º to the sheet surface.
8" or 200mm
80-85*
Powdered & Granular
Materials
Sheet & Reflective
Materials
5.0 Power and Cable Connections
3
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