Calibration method and apparatus for an electronic weight indica

Details Calibration method and apparatus for an electronic weight indica Calibration method and apparatus for an electronic weight indica

1982-11-16

1985-08-20

Goldberg, E. A.

Weighing scales

Processes

177 25, 177 50, 177164, G01G 900, G01G 1934, G01G 2301, G01G 2314

Patent

active

045358540

ABSTRACT:
An electronic weight indicator adapted to convert an analog output of a load cell into a digital display which, after initial calibration, automatically corrects for dead load, drift and other calibration errors introduced by the circuitry. The meter can also be programmed to count for creep. The weight indicator employs a microprocessor to control an analog-to-digital converter which converts the analog signal from the load cell to a digital display. The microprocessor employs a unique algorithm permanently retained in an associated memory to correct for drift and compensate for deadload changes and creep. Once calibrated, no further adjustments by the user are required. All adjustments are made automatically, without operator intervention. The weight indicator can be used with any load cell producing an analog signal in response to a force, e.g. a weight on a weighing platform connected to the load cell.

REFERENCES:
patent: 4310893 (1982-01-01), Loshbough
patent: 4412298 (1983-10-01), Feinland et al.

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