Span adjusting method and apparatus

Details Span adjusting method and apparatus Span adjusting method and apparatus

1984-04-27

1985-08-20

Miller, Jr., George H.

Weighing scales

With testing

177 25, 177164, 177DIG3, 73 1B, 364567, 364571, G01G 1952, G01G 1922, G01G 2314, G01L 2500

Patent

active

045358575

ABSTRACT:
A span adjustment method includes applying a known load to a weighing machine and converting an output value from the weighing machine into a digital value by using an analog-to-digital converter. The characteristic of the analog-to-digital converter is sequentially varied automatically by a span adjustment value, which is produced as an output by a control unit, so that the digital value resulting from the analog-to-digital conversion becomes a digital value set in the control unit and conforming to the known load.

REFERENCES:
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patent: 4316518 (1982-02-01), Jonath
patent: 4417631 (1983-11-01), Johnson
patent: 4467881 (1984-08-01), Kitagawa

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