| 摘要 |
PROBLEM TO BE SOLVED: To provide a utility meter and related methods.SOLUTION: The utility meter includes a sensor device positioned around a conductor to sense current flowing through the conductor. The sensor device includes a non-magnetic substrate, a coil comprising a plurality of turns wound about the substrate, and a dielectric material having a dielectric constant and positioned between the coil and the conductor. The utility meter also includes a meter control board in communication with the sensor device to determine the amount of electricity transmitted through the conductor from a power source to a user over time. The dielectric constant of the dielectric material is selected to reduce a capacitive coupling between the coil and the conductor and to reduce a sensitivity of the sensor device such that the meter control board has only one calibration coefficient for calibrating the sensor device over a certain current range.SELECTED DRAWING: Figure 1 |
