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.

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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 1750 sensors ...

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Measurement of the sprayed skin thickness

Sprayed skins for vehicle dashboards and for airbag cladding are sprayed into a heated mold using a robot-guided nozzle. For safety reasons, extremely low tolerances are required for airbags. For this ...

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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 ...

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Thickness and volume measurement of potato slices

When producing potato crisps, factors such as consistency, quality and taste depend to a significant degree on the thickness of the potato slices used. Depending on the process parameters and the condition ...

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Measurement of flat washers

These days, flat washers are an auxiliary material used in almost every industry. In most cases, the washers consist of different alloys and are required in all sizes and thicknesses, which means the demands ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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Non-contact thickness measurement of aluminum

For the prompt detection of incorrect thickness of aluminum strips, optoNCDT laser triangulation sensors are used as modern alternative solution to isotopic measuring systems. At the measurement location, ...

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Non-contact film thickness measurement

In film production inline thickness measurement guarantees constant product quality. Micro-Epsilon's KS5 combination sensor measures the thickness of films in a non-contact and thus wear free process.

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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 ...

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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 ...

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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 galvanization. ...

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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 ...

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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 ...

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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 ...

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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. ...

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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 ...

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Inner liner thickness measurement

Inner liners are used in every tire to prevent the air from escaping. As the inner liner is a characteristic relevant to safety of every tire, there are high requirements for compliance with the target ...

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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 ...

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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 ...

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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 ...

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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 ...

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Aluminum thickness

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

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Blown film thickness

The thickness of blown films is an important aspect in terms of constant quality in blown film production. During production, strong thickness tolerances can occur. The blown film system from Micro-Epsilon ...

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