Thickness measurement

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DAC

Aircushion/Eddy Current
non-contact, non-radiation, 0,2 - 30mm
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LSS2
Laser Shadow
non-contact, non-radiation, 0,5 - 5mm
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MM2
Jockeyroller
contact, no marks, 0 - 4mm
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SMS2
Spectrometer non-contact,
non-radiation Color and Layer
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TOM
Laser Triangulation
non-contact, non-radiation, 0,5 - 200mm
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UDM
Ultrasonic Distance Meas.
non-contact, non-radiation, 20 - 200mm

For two sided contactless measurement. The measuring head and the reference plate float on an insulating air cushion in constant distance to the measuring material. The arrangement is executed in such a way so that the same low aerodynamic power can be carried out on both sides without touching the continuous material.
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The thickness of web will be calculated by the difference of distance from eddy current sensor to the roller and the web surface measured by the CCD camera from laser scan micrometer.
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Contact measurement by means of flexible measuring rolls against an aluminium roller or plate. Especially suitable for traversing measurement. (Non- Contact principle of measurement due to eddy current sensor)
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Online Color Measurement Thickness of Coatings can be evaluated by the Absorbtion of Wavelength.
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If the surface finish of the measuring material is suitable, one can measure with laser triangulation. The distance between both sensors is fixed by a combined inductive sensor or adjusted by an zero cross profile.
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This sensor unit is designed for measuring thick material. The distance between the measuring material on both sides is measured without contact by ultrasonic sensors. The entire distance between the sensors minus the measuring distance equals the thickness of the material. The design profile of the measuring frame is compensated by a zero cross profile.