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Model ADW-LW

Loss in Weight Controller

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An instrument to control filling by measuring the loss in weight of product from a hopper.

On receipt of a start signal the hopper level is checked to confirm sufficient material to fulfil the preset fill value. If correct, an auto-tare occurs and the feed valve is opened until the fill value is reached. If the hopper level does not have sufficient product, however, the feed valve will not open, but the hopper fill valve will be opened until a preset high limit is reached. A preset timer allows the hopper to settle before the cycle is started. If a further start signal is received during the timeout period then the discharge cycle is initiated.