Conveyor Belt Scales

About Conveyor Belt Scales

Conveyor belt scales are integrating weighing devices that use a simple integral calculus summation process to measure a conveyed quantity of material. Two variables are involved: weight and speed. A weight function measures the weight of a small section of a conveyor. The gross weight on the scale is the weight of the belt, the belt conveyor idler, and the material on the belt. The net weight of material only is the gross weight less the weight of the supported section of the belt and the scale idler. The speed function is the second variable to be measured. Most modern speed sensors are rotary digital pulse generators. These can be optical, magnetic or other on/off sensing units. They are mounted on a pulley or wheel that rotates as the belt moves. They generate an on/off signal as they move which is directly proportional to the distance the belt moves and the speed of the belt.