1, magnetic thickness measurement method. It is suitable for measuring the thickness of nonmagnetic layer on magnetically permeable materials. Generally, the magnetic materials are steel, iron, silver and nickel. This method has high measurement accuracy.
2. Eddy current thickness measurement method. Suitable for measuring the thickness of non-conductive layer on conductive metal. The accuracy of this method is lower than that of magnetic thickness measurement.
3. Ultrasonic thickness measurement method. This method has not been used to measure the thickness of coatings in China, but some foreign manufacturers have this instrument, which is suitable for measuring the thickness of multilayer coatings or places where the above two methods can not be used, but it is generally expensive and the measurement accuracy is not high.
4. Electrolytic thickness measurement method. This method is different from the above three methods, it is not nondestructive testing, it needs to destroy the coating, and its general accuracy is not high, so it is more troublesome to measure than other methods.
5. Radiation thickness measurement. This kind of instrument is very expensive (generally more than RMB 65,438+10,000) and is suitable for some special occasions.
Shanghai Zhixing Scientific Instrument Co., Ltd. is a comprehensive limited liability company integrating research and development, sales, maintenance and service of testing equipment. The company is mainly engaged in environmental monitoring, nondestructive testing, safety control, experimental equipment, surveying and mapping instruments, optical instruments, measuring instruments, analytical instruments, water quality analysis and chemical instruments. The company's coating thickness gauge is used for general coating thickness measurement and material testing, color touch screen, personalized configuration and various equipment interfaces. A sturdy and universal desktop multifunctional measuring system has the functions of saving data and processing measured data, and can connect up to 8 measuring probes.