| 摘要 |
PROBLEM TO BE SOLVED: To provide a print circuit board at the replacement time of which a specific work such as a span adjustment and the like is eliminated.SOLUTION: In a weighing device 10, a CPU74 obtains a weight of an object to be measured based on a digital load signal Dx from an A/D converter circuit 68, a correction coefficient k1 stored in a circuit memory 76, and a span coefficient K stored in a load cell memory 78. The correction coefficient k1 follows characteristics specific to a printed circuit board 50 including a gain k1 of a first amplifier circuit 64. The span coefficient K follows the characteristics specific to a load cell 20 including a gain ka of the load cell 20. When the printed circuit board 50 is replaced due to failure, damage, and the like of the printed circuit board 50, a load cell memory 78 is transplanted on a new printed circuit board 50 from the old printed circuit board 50 (one with failure, damage, and the like), and troublesome and expensive specific works such as a span adjustment and the like are eliminated. |
