The optical belt scale is contact free and detects the volume flow at the discharge point of the feeder. The measurement data is saved in the sensor head and and transmitted to a remote PDA or PC.
Why optical belt- scales?
Conventional belt-scales ‘weigh‘ the belt with the product and multiply the weight information with the transport speed of the conveyor belt. The result is a mass flow information in t/h and t absolute. In order to obtain good accuracy of measurement with this technique certain conditions must be fulfilled.
In mobile screening and crushing plants, wood shredders and in the conversion of mixed refuse the conditions cited above cannot be met for a gravimetric belt-scale In these cases the optical belt-scale offers a reliable and accurate alternative.
|Sufficient belt length with inlet and outlet section (min. 3 – 4 m)|
|Relatively constant belt tension and constant conveyor belt slope|
|Minimum load on the belt where there are low flow rates or low product density|