Key technology for coating thickness checking. The photothermal coating thickness measurement is a contactless measurement method for paints, powder coatings and glazes on metallic and nonmetallic substrates. The different thermal properties of coating and substrate are used to determine the
coating thickness. The surface of the coating is warmed up by a few degrees
with a short, intense light pulse and then cools down again by dissipating the heat into deeper areas.
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