Why are coating thickness gauges divided into two methods: magnetic method and eddy current method?

OU3500 coating thickness gauge uses two thickness measurement methods, magnetic and eddy current, to non-destructively measure the thickness of non-magnetic coatings on magnetic metal substrates (such as steel, iron, alloys and hard magnetic steel, etc.) (such as aluminum, chromium, copper, enamel, rubber, paint, etc.) and the thickness of the non-conductive covering layer on the non-magnetic metal substrate (such as copper, aluminum, zinc, tin, etc.) (such as: enamel, rubber, paint, plastic, etc.) .

This instrument is widely used in testing fields such as electroplating, anti-corrosion, aerospace, chemical industry, automobile, shipbuilding, light industry, and commodity inspection. It is an essential instrument for material protection professionals. Baidu click oupu17