| 摘要 |
PROBLEM TO BE SOLVED: To determine a zero point adjustment interval, so as to produce optimally a combination product, in aspects of combination accuracy and actual amount precision.SOLUTION: Plural measurement apparatuses 8 measure weight of an object supplied from a supply hopper 6, and an arithmetic control part 16 performs combination arithmetic of the weight of the object. The arithmetic control part 16 performs zero point adjustment automatically, based on a zero point weight value which is a weight value of the measurement apparatuses 8 at a zero point measurement timing when the object is not supplied to the measurement apparatuses 8. An operation setting display unit 24 outputs a command to each measurement apparatus 8 by a manual operation. The arithmetic control part 16 calculates a zero point measurement interval, based on an interval of the zero point measurement timings of current time and previous time, and a variation amount of the zero point weight values of the previous and current zero point measurement timings, for every measurement apparatus 8, then, based on the calculated zero point measurement interval, corrects the interval between the current zero point measurement timing to next zero point measurement timing on each measurement apparatus, by the command of the operation setting display unit 24.SELECTED DRAWING: Figure 1 |
