- For fly ash, measurement by combining the unidirectional screw gate valve + steady flow feeder + Coriolis powdery flowmeter.
- For pulverized coal, measurement by combining the unidirectional screw gate valve + steady flow feeder + Coriolis powdery flowmeter + electric and pneumatic control valve.
The Core part for Coriolis powdery Mass flow meter is measuring disc, which is drived by the main axes. The material is flow into the central measuring disc, and then threw out by revolving disc. The material will give a force to the vane of the disc, the force is called Coriolis force, the force is proportional to the material of the mass, the material flow rate will be got after measuring the force. In Coriolis powdery flow meter, the measured force is torques which caused by the driving axes on measuring disc. Due to the radius of disc is fixed, the Coriolis force will be calculated when measuring the torques, at the same time, the material instantaneous flow rate also can be got indirectly. There is no influence on the measurement result for friction between material particles and measuring disc, as well as the friction among the material layer caused by different speed, to ensure the precision of the system.