OUSAF22

Absorbance measurement is based on the Lambert-Beer law, where absorbance is linearly proportional to the concentration of the absorbing substance. A light source passes through the process medium, and a detector measures the transmitted light. A beam splitter provides separate measurement and reference beams, with the reference compensating for particles, air bubbles, and light source aging. The required wavelength is selected by a filter, and a photodiode converts the detected light intensity into a photocurrent. The transmitter then converts the signal into absorbance units (AU or OD).

Standard

OUSAF22 is an optical sensor for color measurement in the visible range of the electromagnetic spectrum. It detects even minor color changes to ensure consistent product quality and provides fast measurement in standard color units, eliminating complex and costly sampling. Suitable for: • Quality control and purity monitoring • Colorant dosing • Decolorization control • Distillation monitoring • Life sciences • Chemical industry • Food & beverage • Oil & gas • Water treatment Standard color scales: • APHA/Hazen • Pt • EBC • ASBC • ASTM • ICUMSA • Lovibond