Both coating thickness gauge and ultrasonic thickness gauge belong to non-destructive testing instruments, which measure the thickness of materials without damaging them. Coating thickness gauge and ultrasonic thickness gauge can measure the thickness of materials in contact from one side of the material through a probe. This avoids the drawbacks of measuring thickness from both sides with calipers, micrometers, gauges, etc., and leverages the advantages of non-destructive testing, making it widely used in important fields such as sheet metal manufacturing, pipeline anti-corrosion, electroplating coating, mechanical component manufacturing, aerospace, etc. Coating thickness gauges and ultrasonic thickness gauges are applied to measure material thickness in different fields. In fact, the coating thickness gauge focuses on measuring the surface coating, while the ultrasonic thickness gauge focuses on measuring the wall thickness and plate thickness of the substrate.
Coating thickness gauge, also known as coating thickness gauge, coating thickness gauge, coating thickness gauge, film thickness gauge, and other flexible terms, is mainly used to measure the thickness of coatings, anti-corrosion coatings, electroplated coatings, plastics, paints, plastics, ceramics, enamel and other covering layers on metals. Therefore, the formal name of the national standard is coating thickness gauge. It can also be extended to indirectly measure the thickness of paper, film, board, etc. The accuracy of the coating thickness gauge is relatively high, generally measured in units of um, and the display resolution can reach precision of 0.01, 0.1, 1um, and other precision. The range of the coating thickness gauge is generally between 0-1250um; Special in 0-400um and 0-50mm.
There are currently two mainstream methods for coating thickness gauges: magnetic method and eddy current method, also known as magnetic and non-magnetic method, and iron-based and non-iron-based method.
Eddy current method: Non ferrous coating thickness gauge uses eddy current sensors to measure enamel, rubber, paint, plastic layers, coatings, etc. on non-ferrous metal substrates such as copper, aluminum, zinc, tin, etc. Coating thickness gauges are widely used in testing fields such as manufacturing, metal processing, chemical industry, and commercial inspection.
Ultrasonic thickness gauges are mainly used to measure the thickness of substrates such as steel plates and steel pipes, rather than measuring the thickness of coatings and coatings. Other terms for ultrasonic thickness gauge include ultrasonic thickness gauge (UT), ultrasonic measuring instrument, wall thickness gauge, steel plate thickness gauge, etc. It is professionally named ultrasonic thickness gauge according to national standards. The accuracy of ultrasonic thickness gauges is measured in millimeters, and the display resolution is generally {{0}}.1, 0.01, 0.001mm, etc. The range of ultrasonic thickness gauges is generally 0.75-300mm, with special ones ranging from 0.15-20mm; 3-5 mm.
