Comparative Analysis of Several Common Thickness Gauges

Magnetic measurement method and eddy current measurement method, with the increasing progress of technology, especially after the introduction of microprocessor technology in recent years, this kind of cladding Thickness Gauge has moved towards miniature, intelligent, multi-functional, high-precision and practical aspects. A big step forward, the measurement resolution has reached 0.1μm, and the accuracy can reach 1%. It has the characteristics of wide application range, wide measuring range, easy operation and low price. It is a widely used instrument in industry and scientific research. And all kinds of materials that can make ultrasonic waves propagate inside them at a constant speed can be measured by ultrasonic measurement. The Thickness Gauge designed according to this principle can be widely used in various fields such as petroleum, chemical industry, metallurgy, shipbuilding, aviation, aerospace, etc.; but at present, there is no such method in CHINA to measure the thickness of the coating, and some foreign manufacturers have such instruments. It is suitable for the measurement of the thickness of multi-layer coatings or the occasions where the above two methods cannot be measured. But generally expensive, measurement accuracy is not high.