TOC-1 Series Refractormeter

TOC-1 Series refractormeter is specifically designed for inline measurement for density, concentration and brix. As a high precision instrumentation, the TOC-1 series has wide range for industrial process application. Featured by the measuring method, the TOC-1 is capable of measuring transparent liquids, translucent liquids, liquids with granule, gelatinized liquids, polymer liquids, etc.

Working Principle

The measurement is based on "total reflection and refraction of light". The illuminant adopts the laser of wavelength (λ=635nm). Passing through the lens, the parallel beam generated from the sensor will transmit to the liquids measured. When the beam return back to the sensor, optical path is then distributed by prism processing, and refraction is generated on the transverse surface. According to the lens, the 2 generated beam are focused to create slit images on image sensor's CCD. Refraction angle is determined by the difference of 2 slit images. In addition, the sensor integrates auto-compensation of pressure and temperature.

By adopting the laser refraction method for fixed wavelength laser, according to Snell's law of refraction, the liquids' refractive index "n" could be calculated.