This measurement has been an important element in the process control of the chemical and refining, pulp and paper, food, sugar and pharmaceutical industries for more than a century.
Cost reduction is possible by reducing the variation of mean average of the product concentration.
The measured refractive index and temperature of the process medium are sent to the control box.
The electronics console houses all control circuitry, microprocessors, digital displays and calibration points and conditions the sensing head signal.
In the pharmaceutical industry they are used to monitor and control concentration levels during supersaturation, a critical process in crystallization.