Computer-control system speeds accurate loading of unit trains

A microprocessor weighing system that relies on load cells is the latest word on batch-loading of unit trains. The weigh bin discharge gate is closed by the operator at the end of the car loading. This signals the computer to take a weight-after-loading reading. Thus the computer will print only the net weight of coal actually delivered to the car. The values of net and gross weight for the car just loaded are then printed on a hard-copy terminal. The computer then automatically batches the proper amount of coal for the next car, and the above loading procedure is repeated for each car in the unit train.