In the first method, two magnets of the same size and specification are placed on the surface that can be adsorbed, such as: patch, blade, iron door, etc., and the size of magnetic force can be identified by hand feeling. Often the feeling is the right feeling. No matter what you're going to do with it, the feel is a very important feeling. The second method is to use an electronic scale: a magnet with weak magnetic force is generally related to its density. If the density is small, the magnetic force is relatively small; if the weight is heavy, the magnetic force is relatively large; on the contrary, the light weight magnetic force is small. That is to say, the heavier magnet is bigger. When measuring the magnet, it should be accurate to gram.
The third kind of Gauss meter, the results of this test are more intuitive, but it should be noted that the center of the measuring magnet is the center of the magnet. If a measuring magnet edge, the position of a measuring magnet center is not accurate.
Generally, the magnetic force of a magnet is measured by Gauss machine
1. The whole magnetic flux of the whole magnet can be tested by using the Helmholtz co vibration coil test;
2. Hall effect detection is reflected in the form of Gaussian value in the conventional test method. The principle is that the traveling wave tube inside the magnetic field shows Hall effect under the magnetic field;
3. Axial field description, which is used to describe the magnetic field distribution of magnetic combination;
4. Fixed suction test;
5. High resolution test can measure the magnetic field change of one hundred thousandth.