Automatic zero-adjustment method and apparatus
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United States of America Patent
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Apr 28, 1987
Grant Date -
N/A
app pub date -
Apr 27, 1984
filing date -
Apr 27, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for automatically adjusting the zero point of a weighing machine includes producing, in the form of a digital value, an initial zero-point correction value when the weighing machine is free of a load. The difference value between an unloaded weight value, which is produced by the unloaded weighing machine, and a value obtained by converting the digital value into an analog value, is calculated. The difference value is compared with a preset value, and digital values are sequentially converted in accordance with the result of the comparison operation to render the difference value equal, or nearly equal, to the preset value.
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