| 摘要 |
PURPOSE:To simplify span adjustment by dividing a set weight of an article, whose weight is known, by a weighed signal of this article to operate a proportional constant and storing the proportional constant in a memory and multiplying this proportional constant and a weighed signal of an unknown weight. CONSTITUTION:The weight of the article whose weight is known, for example, a standard weight to be placed on a scale (omitted in a figure) is set by a constant setting dip switch 22, and the weighed signal subjected to zero point correction of the standard weight placed on the scale is supplied to a divider 24, and the set weight by the switch 22 is divided by this weighed signal to calculate a span coefficient. A span adjusting switch 28 is closed to store the span coefficient in a memory 26 for span coefficient, and the switch 28 is opened, and the standard weight is removed, and an article whose weight is unknown is placed on the scale, and a weighed signal subjected to zero point correction from a substractor 14 is supplied to a multiplier 16 together with the span coefficient from the memory 26, and span adjustment is performed, and the multiplication result is displayed on a display part 20.
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