The wet paint is heated on a drying conveyor belt. At the end of the conveyor belt, the dried and rough pigment is fed into the bin. The conveyor belt is controlled by measuring the filling height in the silo. Control the belt dryer from steam, dust and adhesion with a non-contact radar level meter for accurate and reliable measurement using a sealed antenna system for reliable operation in heavy dirt and strong signal focusing capability for easy use even with limited installation conditions