Optek AF26 VIS/NIR sensor

The Optek AF26 is a high-precision dual-channel sensor which is designed for inline operation. The dual-channel sensor is designed to provide accurate absorption measurements with repeatability, linearity and resolution. The sensor’s output can be correlated to almost any colour scale including APHA and Hazen.

Selected combinations of optical filters make it possible to focus on specific wavelengths, thereby enabling suitable adaptation to the application. Typically, one of the two measured wavelengths is used as a reference channel, where it can be used to prevent the influence of particulate, gas bubbles and lamp aging. Additionally, NIST-traceable calibration accessories provide absolute measurement confidence.

The sensor’s secondary wavelength is designed to compensate the desired light absorbance measurement from any undesired light scattering influence, such as suspended solids, gas bubbles, immiscible fluids or window fouling. The AF26 sensor’s output can also be correlated to almost any colour scale including APHA and Hazen.

The sensor can also be used for the concentration control of metal ions (iron, chromium, copper, nickel, cobalt and manganese) in the plating industry.