Device, ammeter and motor vehicle

摘要

A device, an ammeter and a motor vehicle, having a first section (10) and a second section (20) of a conductor (1) for the purpose of measuring the electrical amperage in the conductor (1) are described; a first sensor means (15) and a second sensor means (16) being provided; the current flowing in the first section (10) and in the second section (20) generating a useful magnetic field; the first sensor means (15) being provided to measure the useful magnetic field; the second sensor means (16) being provided in a location where the useful magnetic field disappears; the second sensor means (16) being provided to measure a magnetic interference field; and the measurement of the useful magnetic field being correctable by the measurement of the magnetic interference field.