Thickness - Thickness of plate, sheet, foil, rubber, insulation, layer, board
Thickness measurement using displacement sensors is a wide application area. Basically there are distinctions between non-destructive/destructive, non-contact/with contact and one-side/two-sided thickness measurement. The Micro-Epsilon measuring techniques for thickness measurement are all emission-free whereby no emissions regulations of any kind have to be complied with.
Thickness measurements must be performed both with contacting as well as with non-contact sensors whereby non-contact measuring techniques show advantages with regard to accuracy and measuring speed.
There is also a distinction between one-sided and two-sided thickness measurement. Two-sided thickness measurements are carried out with at least one pair of sensors which are installed together on one axis. This pair of sensors measures the target synchronously. The difference between the measurement results (C-A-B) produces the thickness of the measuring object.
One-sided thickness measurements must only be performed with non-contact sensors. In doing so, the target is only measured with one sensor and either only a part of the target thickness (e.g. layer thickness) or the complete measuring object thickness is measured. Thickness measurements are mainly used in process control and quality assurance, e.g. for the control of extrusion systems or 100% checking of tube diameters.
Thickness measurement of varnish on PCBs
In order to protect PCBs from environmental influences such as humidity, they are coated with a protective clear varnish. This ensures error-free operation. The automotive industry in particular demands a minimum thickness for this protective coating.Show details
One-sided thickness measurement of container glass
In container glass production, wall thickness and roundness of the bottles are crucial quality features. This is why these parameters must be 100 % inspected. Any faulty containers are immediately ...Show details
Active compensation for movements in the measurement process
Harsh industrial environments place high demands on optical displacement sensors – precise measurements must still be possible despite dust and high processing speeds. The optoNCDT 1750 and ...Show details
Measure Disc Thickness Variation (DTV) on brake discs
Measuring the deformation of brake discs under load while braking is an ideal task for the optoNCDT 1700BL. Due to the short wavelength of the blue-violet laser used, the light emitted from ...Show details
Thickness measurement system for partially transparent insulation panels
In the manufacturing of plastic panels, thickness profile measurements must be carried out due to the necessary quality assurance. For this purpose two laseroptical displacement sensors are mounted on ...Show details