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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.

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Non-contact thickness measurement of aluminium

For the prompt detection of incorrect thickness on aluminum strip, patented laser triangulation sensors are employed as a modern alternative solution to isotope measurement systems. To save costs the places ...

Aluminium thickness

It is important to know the thickness of the plates for the manufacture of aluminium plates. The non-contact profile measuring system measures the profile of the plates using a capacitive sensor. At the same ...

Thickness measurement of battery separators

In the production of battery separators the in-line monitoring of the profile thickness is an important measurement task within the framework of quality assurance. A measurement system with high spatial resolution ...

Blown film thickness

The thickness of blown films is an important aspect in terms of constant quality in blown film production. Partially strong thickness tolerances can occur for the production in doing so. The blown film system from ...

Sheet thickness

It is often the case for sheet machining that sheets must be transported individually in machines. Therefore, it is essential that only one sheet gets into the machine. If two sheets are on top of each other, the process ...

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 the red-hot brake ...

Thickness measurement of mineral cotton

Mineral cotton is often used for heating insulation of buildings.  However,  as  well  as  the  homogenous  material structure, thickness is also a critical factor in ensuring the right insulation characteristics. In ...

Processing measurement data for thickness measurements

One method of measuring thickness is to calculate values from two opposing distance sensors. With up to six inputs, the CSP2008 universal controller allows synchronous recording of measured values from optical sensors: A pair ...

Thickness measurement of black rubber belts

Rubber mats for the structure sealing must exhibit a specified thickness for durability and tear resistance. The thickness of the films is measured directly after the extrusion. The optoNCDT 1700 sensors used measure the distance ...

Display glass / flat glass thickness

A special measuring system has been developed for the quality control of display glass. The glass pane is placed on a measuring table by a robot. A measuring arm with several confocal sensors traverses the glass pane there. If any ...

Active suspension cylinder

Modern mobile cranes are always employed when heavy loads must be lifted quickly and at various locations. They are used, for example, in the recovery of broken down trucks. The field of operation is not restricted to paved surfaces, ...

Flat film thickness

The thickness of manufactured films is frequently a decisive quality criteria in production. Specially developed thickness measurement systems are used as early as possible in the production for the check of the thickness. Dual sensors ...

Flat glass thickness

A special measuring system has been developed for the quality control of display glass. The glass pane is placed on a measuring table by a robot. A measuring arm with several confocal sensors traverses the glass pane there. If any thickness ...

Non-contacting online layer-thickness measurement of foils

In foil production online process monitoring guarantees constant product quality. MICRO-EPSILON’s KS5 combination sensor measures the layer thickness on foils in a non-contact and thus non-wearing process.

Yarn thickness

A consistent yarn thickness is a prerequisite in the textile industry for high quality products. Therefore, the naturally occurring yarn thickness fluctuations must be eliminated. The yarn is drawn to a constant thickness using a stretching ...

Glass thickness

A special measuring system has been developed for the quality control of glass. The glass pane is placed on a measuring table by a robot. A measuring arm with several confocal sensors traverses the glass pane there. If any thickness discrepancies ...

Thickness measurement of glass

The specification of the thickness of glass panes is an optimization process between a required mechanical strength and efficient use of materials. In the manufacturing process the glass thickness is measured and the conformance to prescribed tolerances ...

Inner liner thickness measurement

Inner liners are used in every tyre to prevent the air from escaping. As the inner liner is a characteristic relevant to safety of every tyre, there are high requirements for compliance with the target data. An important criterion is the layer thickness. ...

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 a traversing device, one underneath and one above the ...

Thickness Measurement on the Calender

Rubber-coated textile and metal fabrics form the basis of tire manufacture. The rubber is applied to the fabric by calender rolling which demands a uniform layer thickness for the manufacture of high quality tires. The strength and the dimensional conformity ...

Active compensation for movements in the measurement process

Harsh industrial environments place high demands on optical displacement sensors – precise measurements must still take place despite dust and high processing speeds. The optoNCDT 1700 and optoNCDT 2300 series of laser sensors have been mastering these challenges ...

Thickness measurement of dies

When optical data carriers are produced, the data are initially transferred to a master. Depending on the number of copies, different dies made of nickel are produced from the master by galvanisation. These dies must show a thickness of 297 µm ± 3 µm for faultless ...

Thickness measurement using displacement sensors

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 ...

Thickness measurement of rubber film

Precise thickness specifications are assigned for the manufacture of rubber film which is rolled using calender rollers. Random-sample manual measurements, as previously carried out, are no longer sufficient for today’s demands on quality assurance. Consequently, a system ...

Oil film thickness

The oil film thickness for combustion engines describes the gap and thus the quantity of oil between piston and cylinder wall. Thus it is sometimes a determining factor for smooth operation and durability. As the oil film can only be integrated and really measured in the firing ...

Double-sheet detection before pressing

To prevent damage, laser-based optical displacement sensors are employed in front of the inlet for profiled sheets in presses to enable the detection of double sheets. The sensors are mounted opposite one another, above and below the passing sheets. Irrespective of the actual position ...

Reliable quality control in the rolling mill

One of the profile rolling mills processes profile steel in reversing operation. The rod centre is then measured and evaluated using a  optoNCDT 1700-750BL.    

Thickness monitoring in straightening factories

Optical laser displacement sensors are employed in front of the inlet for panels on straightening machines to prevent damage to the machine. The sensors enable the detection of double sheets and an accurate acquisition of upright edges.

Layer thickness measurement (non contacting)

Layer thickness measurement belongs to the group of one-sided, non-contact thickness measurement. Basically, only the layer thickness of electrical insulators can be measured for opaque objects. An eddy current sensor penetrates the insulating layer without damage and measures the distance ...

Measurement of sprayed skin thickness

Sprayed skins for vehicle instruments and controls and for airbag cladding are sprayed using a robot-guided nozzle. The thickness of the sprayed skin is inspected during the spraying process. An eddy current sensor measures the distance to the nickel-coated spray mould. The eddy current sensor ...

Windscreen thickness

Using a film between several glass panes, laminated safety glass prevents dangerous shards flying around in the case of breakage. The adhesive film is clamped during the production. In doing so, it is important that the film shows the correct thickness in order to be able to ensure the required ...

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FI-Jouko-Kuosmanen

Jouko Kuosmanen

+358 40 8484 109
jouko.kuosmanen@micro-epsilon.fi
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