Intelligent electronic device with broad-range high accuracy

Details Intelligent electronic device with broad-range high accuracy Intelligent electronic device with broad-range high accuracy

2011-08-09

2011-08-09

Cosimano, Edward R (Department: 2857)

Data processing: measuring, calibrating, or testing

Calibration or correction system

C073S001010, C073S865900, C324S076110, C702S187000, C702S189000

Reexamination Certificate

active

07996171

ABSTRACT:
A method and apparatus provides high-accuracy measurements of an electrical parameter across a broad range of parameter input values. In one embodiment, an intelligent electronic device (IED), e.g., a digital electrical power and energy meter, with a plurality of independently-adjustable gain factors measures a parameter, and calculates and stores calibration factors associated with known values of the measured parameter. The IED or meter applies the stored calibration factors when measuring unknown values of the measured parameter, to improve the accuracy of the measurement.

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