Nondestructive Magnetic Thickness Measurement

The iqualitrol magnetic gages are widely used to measure electroplating, nickel coatings, phosphating, paint, plastic and coatings such as enamel on steel. Based on the Magnetic Attraction principle, they allow for the quick, precise, nondestructive measurement of non-magnetic coatings applied over ferrous substrates.

The attractive force is related to the distance between a permanent magnet and a steel substrate, the distance represents the thickness of the coating to be measured.

The magnet is lifted from the surface by means of a spring connected to the magnet arm. The force needed to lift the magnet is directly related to the angle of rotation of the torsion spring.

The gage also allows for measurements on curved surfaces, and precise measurements in tubes and on round parts.