A light-band is directed onto a measuring object running over a roller. According to the thickness of the measuring object, the light-band is partially shadowed; this is measured. An eddy current sensor measures the roller position. The material thickness of the measuring object can be determined from the difference of both measured values.
The shadowing sensor is a good choice for structured flexible products up to a thickness of approx. 10 mm.
Measurement of thickness (contactless)
Calipro DMS measures the material thickness of the product using a light curtain. It is insensitive to colour, transparency and opacity as well as largely independent of the…