Shadow works on the principle of laser occlusion over a measuring roller.
It is a direct measuring system, and it is, therefore, independent of the properties of the film.
Shadow is a non–nuclear technology that does not require licensing or protection guards.
Shadow is insensitive to material properties, transparency, colour and opacity. Shadow can measure total thickness of single, multilayer and embossed materials.
Extruded sheet, Foam, Composites, Multilayer/embossed materials, Calendared sheet, Rubber, Coated Substrates, Non-woven.
Shadow are available in widths of 500 mm to 8 meter
Ultra-precise thickness measuring with an accuracy of ≤ 3 µm
Shadow is suitable for the material thickness of up to 3.5 mm
The sensor head contains 2 sensors: a laser shading sensor and an eddy current sensor. The shading sensor sends laser beams over the measuring roller and the film to be measured. A receiver (line scan camera) detects the shading by the film and by the roller. The eddy current sensor permanently measures the distance of the sensor head to the measuring roller. The result of both measurements gives directly the thickness of the film.
No calibration is necessary. The measurement is independent of film properties.
|Sensor System||laser occlusion/eddy current|
|Max. Thickness||3,5 mm|
|Measured Cleaving||5,5 mm|
|Sensor Diameter||30 mm|
|Measuring Spot Diameter||0,5 mm|
|Sensor Resolution||0,5 µm|
|Repeatability||≤ ± 1,5 μm|
|Measuring Speed||10 – 300 mm/s adjustable|
|Process Speed||10 – 500 mm/s adjustable|
|Diameter of the Reference Roller||200 mm|
Please download the PDF data sheet for detailed technical specifications!
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