Arrangement for providing sensor calibration information in a modular utility meter
US6892144B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2002 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Oct 5, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R35/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A modular electronic utility meter has a sensor portion that includes sensor devices and a memory device storing calibration and/or error information specific to the sensor devices. Such a sensor portion is designed for use with a corresponding measurement portion that extracts the calibration and/or error information from the memory in the sensor portion. The measurement module then employs the calibration and/or error information in its calculation of energy consumption information. The calibration information includes phase and magnitude error information for at least one of a current sensing device and/or a voltage-sensing device. That error information may include coefficients of a polynomial.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.