Optek Photometric Analyzers (Turbidity)

Modular construction of the sensors offers maximum flexibility in adapting to various process needs. Options include electro-polished sensor bodies, chemical resistant materials (sapphire windows, titanium, Hastelloy, etc.) and high pressure versions.

A special tungsten lamp produces a constant light beam that passes through the process medium. The attenuation of the light intensity, caused by absorption and/or scattering by dissolved and undissolved substances, is detected by a sealed silicon photodiode.

AF56-N (NIR-Absorption / Turbidity)

The AF56-N uses light from 730 - 970 nm (NIR) to measure solids concentration independent from color or color changes. Depending on the optical path length, measuring ranges from g/l to ppm are possible.

AF56-F (VIS-Absorption/Color)

The AF56-F is used to measure color or color changes at a specific wavelength in the visible range (430 nm). A loss of light as a result of an increase in color depth is precisely detected.

OPL

Special optical windows are made from a single crystal sapphire, providing superior resistance to all abrasive and corrosive media. With the appropriate choice of sensor bodies and windows in various lengths, the optimum OPL (optical path length = distance between the windows) can be achieved to meet the measurement requirements, i.e., low/high measuring ranges at highest resolution.