A belt scale is an automatic weighing instrument that continuously weighs bulk materials without interrupting the movement of the conveyor belt, mainly applied in dynamic metering scenarios industrial production such as power, metallurgy, and mining. By detecting the belt load and speed signals, it outputs instantaneous flow and cumulative weight through integral calculation, replacing traditional static batch weighing.

An electronic belt scale consists of a weighing bridge, sensors, a speed measuring device, and a control instrument. Its core components include various scale frame types such as double- multi-roller and single-roller, with an accuracy range between ±0.125% and ±1%, adapting to belt speeds of 0-6m/s inclination angles of 0-30°. During installation, it is necessary to ensure the independent support is level and stable, avoiding vibration, off-center loading, and electromagnetic interference while requiring stable conveyor belt tension and standard-compliant idler accuracy.

According to the load carrier, it can be divided into weighing platform type and conveyor type; according to belt, into single-speed and variable-speed; and according to weighing principle, into mechanical and electronic types, among which the electronic type dominates due to sensor technology. Future development trends the application of high-precision sensors, the development of intelligent instruments, and the innovation of new verification methods to improve system reliability and measurement accuracy。