EMI’s batch mode, Weigh Scale Hopper was specifically developed to provide maximum, part counting accuracy. Depending upon the size of the load cell selected, Weigh Scale Hoppers are capable of detecting part weight as small as 0.5 grams. The final accuracy of a system is dependent on the specific application - the size of the parts, the number of parts on the final cleat, etc.

How does it work?

• By sampling a given number of parts in the hopper, a part weight and batch weight is determined.
• The number of parts required for a full container is entered into the control system.
• The feeding conveyor fills the Weigh Hopper until the batch weight is reached.
• The feeding conveyor stops momentarily while the Weigh Hopper dumps the batch into the container.
• Batches are filled into the container until the final batch is being filled. The controller then determines how many more parts have to be filled to meet the final weight. As the final parts are being filled, the controller slows the feeding conveyor to allow the parts to slowly dribble in.
• The hopper dumps the last batch, zeros itself out and immediately begins filling again.
• The container indexes and a new container takes its place.