magnetic moment
Neither the hysteresisgraph nor pulse magnetometers make it possible to measure all shapes, sizes and use all methods of magnetising permanent magnets. The magnets with shapes and sizes too large or too small to be measured by means of the hysteresisgraph or pulse magnetometer are to be replaced with „standard samples“ manufactured from the same production batch, and these serve as a representative of the magnet material. However, in order to check the „unmeasurable“ magnets themselves, we measure the magnetic moment in our accredited laboratory.
magnetic moment
The magnetic moment is primarily the property of elementary particles. As the magnetised magnet is an arranged material structure, these moments add up together, resulting in a magnetic dipole moment of the magnet, which is then measured by means of a fluxmeter and Helmholtz coils. Through this measurement, we obtain a value relating to the magnet material and volume and we can compare this value with other deliveries, thereby monitor prospective deviations and above all ensure the permanent product quality. The magnetic dipole moment can only be measured for two-pole magnetised permanent magnets.
measurement of magnetic moment
Our equipment makes it possible to measure the magnetic dipole moment of magnets up to dimensions of D260/150 mm. Sample size D36/23mm in the temperature range of -40°C to 300°C, for a short term also at -190°C. The magnetic dipole moment value is also used to evaluate the thermal stability test.
we measure in an accredited laboratory
- magnetic dipole moment using a fluxmeter and Helmholtz coils based on standards ČSN EN 60404-14 and IEC 60404-14
For more detailed information on the performed tests, see the Annex to the Accreditation Certificate or ask for it.
Jan Kratochvil ml.
