MAGNETIC-INDUCTION METERS EMPLOYING THE HALL EFFECT

A measuring device, called a gaussmeter was developed for direct measurement of magnetic induction. It can be used more conveniently than conventional fluxmeters, since there is no need to move the sensor in and out of the magnetic field during measurements. Another of its advantages, in comparison with conventional fluxmeters, is the small size of the sensor with the halotron 4 x 2 x 0.2 mm, which permits accurate, almost point-to-point field measurements. These measurements can be applied not only to the values but also to the distribution of magnetic fields in narrow gaps of electromagnets or electric machines, as well as to dissipation fields. Gaussmeters of this type can be built for measuring magnetic induction in constant and variable magnetic fields with frequencies up to 10 to the 12th power cps. Gaussmeters used for measuring magnetic induction in constant fields are discussed. Author