50 hertz. According to the specifications of the belt scale, the bandwidth is 500-2400mm, the belt speed is 0-4m/s, the remote transmission is 1000m, the hertz number is 50, and the inclination angle of the belt conveyor is 0- 10. Belt weigher is an automatic weighing instrument, which can continuously weigh the bulk materials on the conveyor belt without subdividing the mass or interrupting the movement of the conveyor belt.