| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic balance which keeps the influence of energization drift reduced. SOLUTION: The electronic balance includes a switch 7 and an A/D converter 2 switching a load signal detected by a load detecting section 1 and an output signal of a temperature sensor 6 at a constant period to convert the signals into digital signals, a control section 3 for operating temperature correction of the load signal and conversion thereof into a weight value, a built-in weight 5, and a weight adding/removing mechanism 4. The electronic balance additionally has the function of measuring the zero point drift and the span drift characteristic when the control section 3 is energized for a certain time, determining a correction expression for correcting the drift, storing it in a RAM 33, and correcting the zero point drift and the span drift of the load signal by using the correction expression when it is energized the next time. COPYRIGHT: (C)2008,JPO&INPIT
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