XFR On-stream Slurry Analyzer (OSA100), a large scale on-line concentration monitoring analyzer of integration of optic and machinery can be widely applied in such industries as non-ferrous metal, metallurgy and mineral processing. The analyzer has the advantage of automation, high intelligent, stable working, reliability, speed analysis, accuracy and easy operation and maintenance. The system combined with high integration function, compact structure and wide flow channel expansion can satisfy the analysis needs of different scale mine users by adopting modular design conception. Furthermore, it can participate in process automation control.