The digital K-Patents Process Refractometer PR-23-AC is a heavy duty instrument for measuring the concentration of a wide range of liquids in sanitary applications.
The K-Patents PR-23-AC determines the Refractive Index (R.I.) of the process solution by measuring the critical angle of refraction, measured by a digital CCD-camera, which changes with concentration.
With a full measurement range of 0-100 Brix, particles, bubbles or colour changes have no effect on the accuracy of the measurement which is +/- 0.0002 Refractive Index, corresponding to +/- 0.1 % by weight. The sensor design results in an absolute drift-free signal. The probe is designed for demanding process conditions, high temperatures (max. 130°C), pressure and vibration.
Given the digital principle of measurement and all sensor optics enclosed within a rigid patented CORE-optics module, the calibration will not change with time, so once the sensor is calibrated to the desired range, there is no need for recalibration.
The output signals of 4mA20 and serial (RS 485 or RS 232) are standard together with low and high concentration alarm relays.
The PR-23-AC meets the 3-A Sanitary Standard requirements and is European Hygienic Design Group tested.
