A belt weigher, also known as a belt scale or weigh belt feeder, is a device used to measure the flow rate and total weight of materials transported on a conveyor belt. It works by continuously weighing the material on the moving conveyor belt and providing real-time weight data, which can be used for a variety of purposes such as process control, inventory management, and billing.

A typical belt weigher system consists of a load cell or multiple load cells, a speed sensor, and a controller. The load cells are typically installed underneath the conveyor belt, and they measure the weight of the material on the belt as it passes over them. The speed sensor measures the speed of the conveyor belt, which is used to calculate the flow rate of the material. The controller receives the weight and speed data from the load cells and speed sensor and calculates the total weight and flow rate of the material.

Beltweighers are commonly used in industries such as mining, cement, food processing, and agriculture to measure and control the flow of materials. They are known for their accuracy, reliability, and ability to operate in harsh environments.