Microwave oven determination of moisture content of sunflower

Agrain flow regulator was designed and constructed at the U.S. Grain Marketing Research Laboratory for dust emission control. It consisted of a hopper with a grain level sensor, proportioning controller, and a swinging gate powered by a positioning motor. The regulator automatically adjusted the grain flow rate to maintain a constant level of grain in the hopper. When the flow regulator was used, dust concentration in air in the bin during loading was about 20% of that when a conventional spout was used. Use of the flow regulator resulted in more even distribution of fine material than when a conventional spout was used. Grain damage caused by the flow regulator was not significantly different from that observed when no flow regulator was used