Hopper Feed Conveyor Scale Controller In service at a food processing plant, this operation has fresh product arriving in containers that are placed on a motorized conveyor. The containers travel along the conveyor, over a Weigh-Tronix conveyor scale where each is weighed and the time recorded. Finally the conveyor dumps each container's contents into a hopper, which feeds the fresh product into a blast freezer. To control the rate at which product is fed into the hopper a hydraulic gate is attached to the conveyor. It works by only allowing a single container to pass through at a time. The time between each gate opening is controlled by the WI-1310 scale indicator, which makes the decision of when to open the gate based on the desired throughput set by the operator, and the net weight that is passing over the scale. By making continuous adjustments in the timing of each gate opening, the hopper feed control system gets maximum efficiency from the blast freezer, without danger of overloading it and spoiling product.