With IRM-11 it is possible to measure dissolved particles in liquids with refractive index scales such as BRIX, Plato or other customer-specific devices. An LED light source radiates directly into the medium. The density of the liquid affects the speed of light and changes the refractive value.
Refraction = Refraction of light beam at the transition between two materials / media with different refractive index
The receiver section reads the temperature compensated refractive value and displays the value via a 4-20mA signal in the selected unit.