Several reasons for the measurement error of the coating thickness gauge
1. The structure and shape of the material to be measured by the thickness gauge are different. On workpieces with different structures, the magnetic field distribution will vary with different structures and shapes, which will cause measurement errors.
2. The measured material itself contains magnetism. Some materials have a residual magnetic field in the material to be tested during processing or certain process requirements. Due to its uneven distribution, the resulting measurement error is also inconsistent, and the measured value of some parts on the same workpiece will suddenly become larger or smaller.
3. Different parts of the same material may also produce changes in the magnetic field. For example, the magnetic field distribution is different between the edge and the middle area of the material, which will cause measurement errors.
4. The properties of the measured materials are different, the magnetic flux will be different, which is also one of the reasons for the error.
5. The size and thickness of the material are different, which can also lead to measurement errors.
6. The surface of the measured material is not smooth enough, which is also the reason for the error.
