Belt scales

A belt scale is a weighing bridge built into the frame of a belt conveyor. The load carrier is a steel structure holding the strain-gauge load cells and a belt speed sensor — so fitting one does not require major structural changes to an existing conveyor.

The indicator shows instantaneous load on the belt, the quantity dosed, belt speed, instantaneous throughput and the number of measured units conveyed.

Conditions for correct application

The accuracy of a belt scale depends on the conveyor as much as on the scale. Reaching the stated accuracy class requires:

• smooth, steady and settled running of the conveyor belt,
• a belt in suitable condition — its parameters must stay consistent with age, load and temperature,
• enough idler stations before and after the scale,
• a conveyed quantity near maximum capacity; accuracy falls off at much lower loads.

We assess these before designing anything. If an existing conveyor does not meet them, we say so before the scale is ordered.

Where it is used

• Monitoring conveyor line throughput
• Recording material fed into production
• Concrete plants, quarries, cement works
• Recycling and sorting lines

Technical parameters

Weighing type	continuous
Capacity	up to 20,000 kg/h
Belt speed	0.05 – 3.0 m/s
Belt width	400 – 2,000 mm
Belt incline	0° – 18°
Accuracy class	to 1 % dynamic, given correct application conditions

Parameters are indicative — the exact configuration, range and accuracy class are designed around your application.

Back to Weighing and force measurement