Non-Contact Measurement of Roll and Coil Length

Accurate Measurement of Roll Length even at high Speed

Is your billing based on correct length values? Are all materials measured with same accuracy? Or do you risk length complaints? … The exact roll length should be measured during winding of web or spooled goods. Winding takes place at the end of the production, or when rewinding from large rolls into small rolls, means from mother roll/tambur to rolls with vending length. This may happen at high acceleration and high speed. Contact measurement systems, such as friction wheels, measuring wheels, impellers or measuring rollers, are subject to slippage and wear. The consequences are uncertainty among customers, length complaints and refunds. This can be avoided by the use of μSPEED non-contact length measurement systems, which measure nearly independent of material and surface at any speeds. ELOVIS laser encoders measure their whole lifetime with consistently high accuracy.

Non-contact measurement of roll length and coil length – typical roll and spool measurement materials:

  • Paper, Cardboard, Tissue, …
  • Film, Foil, Plastic Packaging
  • Textiles, Carpets, Nonwoven, Fabrics
  • Web, Sheets, Foils of Metal
  • Cable, Wire, Rope
  • Profiles, Tubes, Hoses, Strands

non-contact measurement of roll length and coil length –  machines with measurement problems:

  • Winders, Winding Machines, Rewinding Machines
  • Slitting Machines, Lengthwise Cutter
  • Roll Cutting Machines, Cross Cutter
  • Fabric Inspection Machine
  • Calendering Machines
  • Laminators
Length Speed

Application Examples

Length Measurement of reflective films

Precise length measurement on highly reflective surfaces such as films for the food indutry and optical films. Length...

Length Measurement of Paper

Accurate length measurement of paper, tissue, packaging material regardless of grammage - also as a basis for square ...

Length Measurement of Nonwovens

Length measurement of nonwoven, felt and material with high thickness variance and different grammages with consisten...

Length Measurement of Separator Film

Battery separator foil must not show any holes, folds, kinks or damage, otherwise this may result in considerable dam...

Length measurement of edge-adhesive tape / decorative paper

Edge-adhesive tape and decorative paper are produced in a large variety of decor and structures in large batches. How...

Length of Steel Sheets in Refinement Facilities

The length measurement of a steel sheet with oiled surface, over embraced rollers is possible only with limited accur...

Length of steel cables and hot wire

Steel ropes and hot wire are in long lengths and at high speeds correctly cut to length. In both cases, contact measu...

Length Measurement of Umbilical, Submarine Cables and Ropes

Wet and dirty umbilical / submarine cables as well as rough stranded ropes and cables can best be measured with non-c...

Length Measurement of Ropes in the Braiding Machine

Measurement of rope lengths in the stranding machine by means of non-contact laser-encoders. Accurate measurement des...

Matching Products and Services

Laser-Encoder
Length & Speed Measurement Systems

  • Non-contact length and speed measurement, optically by laser
  • Length and speed free of slippage, maintenance-free, permanently calibrated and accurately measured
  • The Laser-Encoder replaces tactile measurement via impeller, wheel, measurement roller, or machine drive
  • Measurement of agitated surfaces via laser-doppler surface velocimeter

ELOVIS Services

ELOVIS offers the following services in this area:

  • Consulting on the subject of length and speed measurement
  • Measurement and calibration services
  • Help with length complaints from your customers
  • OEM sensor developments in the field of length and speed measurement

Always there for you:
Bernd Engelsdorf

ELOVIS GmbH

Karl-Friedrich-Straße 14-18
76133 Karlsruhe, Germany

T +49 721 933823-0
F +49 721 933823-23

sales@elovis.de

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