Calibration of microcomputer-based metering apparatus

Details Calibration of microcomputer-based metering apparatus Calibration of microcomputer-based metering apparatus

1995-03-29

1998-01-06

Trammell, James P.

Boots, shoes, and leggings

364483, 364581, 364582, 324142, G01R 2106, H03M 110

Patent

active

057062145

ABSTRACT:
For calibration of a microprocessor-based electrical metering device, the scaled values of current and voltage inputs are presented on a display along side of the associated scaling factors. Soft keys on the display are used to increment or decrement the scaling factors to adjust the scaled values of the associated current or voltage to the value indicated by a precision reference meter which measures test values of current and voltage provided by a stable source. For analog inputs, both a zero scaling factor (offset) and a full scale factor (slope) are presented on the display adjacent the scaled analog value and can be separately adjusted by the soft keys.

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The Data Acquisition System handbook. vol. 29, 1995, Omega Engineering, Inc .

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