K-Patents
This company’s Platform 4 digital process refractometer system (photo) consists of a probe or compact refractometer and a graphical user interface. The refractometer is a standalone device that is capable of operating independently to provide inline measurement of liquid concentrations, liquid density and more. It has a measurement range of 0 to 100% and it provides an Ethernet or 4–20-mA output signal proportional to the temperature-compensated concentration value for realtime process control. Different user interface options range from a rugged, multichannel, industrial computer to a compact lightweight and web-based version. The measurement is based on this company’s technology, which uses solid-state optics and a charge-coupled device (CCD) camera to provide a digital measurement of refractive index. The measurement accuracy is±0.0002 refractive index (RI), which corresponds to±0.1% by weight, and is not affected by bubbles, particles or the color of the process liquid, says the manufacturer. Special wetted-parts materials and intrinsically safe and hazardous area certification are available. — K-Patents Oy, Vantaa, Finland