The ‘Loss in weight’ feeder is a gravimetric device that receives material from an upstream, and accurately doses the required amount into a downstream typically through a screw feeder.

The feeder’s operation is regulated by the amount of material in the hopper. The bunker is positioned on a loadcell, which continuously provides weighing information and conducts signals to the processor through the PLC. The speed of the screw feeder is constantly adjusted by the PLC for accurate results.

Set values are defined by the operator and entered on the panel or SCADA system. The special PLC software above continuously controls the feed amount, and any fluctuation from the set range is prevented. The system works very precisely that it is able to perceive any change in flow characteristics.