Electromagnetic thickness gauges

Electromagnetic

— devices operating on the basis of basic electromagnetic phenomena — magnetic induction or the Hall effect. Simply put, the sensor of such a thickness gauge creates a magnetic field, when a magnetic object enters the sensor’s coverage area, the field characteristics change, and these changes determine the distance to the object — in this case, this distance corresponds to the thickness of the paintwork, because the sensor is pressed tightly during measurements to the surface. Electromagnetic devices do a better job with steel and other ferrous metals than eddy current ones, but they cannot work with non-magnetic materials.