| 摘要 |
PROBLEM TO BE SOLVED: To improve metering accuracy in a combinational balance using a metering hopper having two metering chambers. SOLUTION: This balance is equipped with a plurality of metering hoppers 4 having respectively two metering chambers 4a, 4b, for metering the weight of metering objects inputted into each metering chamber, capable of discharging the metering objects relative to each metering chamber; a plurality of supply hoppers 3 disposed over each metering hopper corresponding to each metering hopper, for inputting the metering objects selectively into each of the two metering chambers of the corresponding metering hopper; and a control part 10 for selecting combinational metering chambers wherein the total weight of the inputted metering objects is in a prescribed weight range by performing combinational operation based on the weight of the metering objects inputted into the metering chambers of each metering hopper, and performing discharge operation for discharging the metering objects from the selected metering chambers. The control part 10 performs the combinational operation under the restriction wherein the number of metering hoppers 4 in which both of the two metering chambers 4a, 4b are selected simultaneously in the combination is smaller than a prescribed number. COPYRIGHT: (C)2006,JPO&NCIPI
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