Rotor Weigher – Coriolis weigher for online weighing of poor ﬂowing bulk solids. The challenge in weighing products like flour, powder and dust lies in their tough flow characteristic. By means of a Coriolis scale the product is constantly held in motion. The mass flow is not interrupted, but flows through continuously. The Rotor Weigher, based on the Coriolis principle, measures the torque of the product by accelerating it tangentially to the rotating direction. The measurement setup is easy to install, features low installation height and is insensitive against vibrations.