Non-Contact Piece Length Measurement up to 5 m

…during material movement, permanently highly precise – in transmitted light

Do you still measure piece lengths by hand in samples? Incoming and outgoing material edges ensure increased wear and measured value deviations when using tactile measuring equipment. Driving against mechanical stops costs processing time. Optical stops must be readjusted depending on their length. Therefore, often there is only a manual measurement in the running-in process. If length errors occur in the current production, the production is declared as a reject. … The solution is non-contact longitudinal light grids. ELOVIS offers the worldwide unique SLM light grid technology for the remeasurement of piece goods up to 5 m in length. This works with an accuracy range of 1/10 mm/m. The non-contact remeasurement of the piece lengths takes place in the SLM system during the material passage in longitudinal direction. The measurement serves the production optimization as well as the good/bad sorting and documentation of the delivery condition of pieces. SLM systems are used to measure the length of cut profiles, tubes, hoses, plates, sheets, blanks, bolts, bars, beams and hubs made of a wide variety of materials. The use of the ELOVIS systems SLM-2 or μSPEED is suited to measure longer part lengths.

Typical piece goods to be inspected:

  • plastic and extrusion (profiles, hoses, pipes …)
  • metal (profiles, tubes, bolts, rods, bars, sleeves, …)
  • Plastic sheets and foil formats
  • Metal (sheets, blanks,…)
  • Construction and insulation materials (plasterboard and fiberboard, …)
  • wood (firewood, KVH, beams, …)
  • Chipboards (MDF boards, HDF boards, OSB boards)
  • Furniture panels (MFB melamine coated panels, printed panels, lacquered furniture panels, …)
  • Paper and cardboard hubs

Typical piece goods production machines with measurement problems:

  • guillotine
  • Sheeter
  • Cross divider
  • cutting machine
  • saw line, flying saw
  • Throughfeed
  • punch
  • Parting line
  • trimming line

Application Examples

Length Measurement of profiles after cutting

High demands of the automotive, furniture, electronics or medical industry on the cutting accuracy of profiles make t...

Highly accurate contact free part length measurement during part feeding. Measurement of fixed length, sections and cut parts, pipe sections, tubes and hoses.

Length Measurement of pipes after cutting

The final measurement of all tubes after the cutting allows a shortening of the setup time of the cutting system and ...

Test station for final part length measurement

If discrete part lengths are to be measured quickly and reliably and the measurement length has to be documented, the...

Metal Industry Sheet length measurement

Length Measurement of sheets and plates

Metal sheets and boards are cut and then palletized. A final measurement is often done manually on the pallet stack. ...

Measure the length of wood and chipboard

The woodworking industry is now confronted with high accuracy requirements. In order to make a profit, it is importan...

Width of paper rolls on the chain conveyor

Paper rolls are transported to the warehouse via chain conveyors after wrapping. Prior to storage, the rolls of paper...

Length of transparent plastic profiles

Even the final length measurement of translucent plastic profiles is easily and accurately possible with the non-cont...

Measure the length of metal parts, pipes, bolts, slugs

Metal parts such as pipes, bolts, rods, slugs should have the correct part length. When operating presses and forging...

Metal Industry Measurement of tube length

Weerth - cutting and measuring precision pipes and tubes

Weerth Handling Systeme manufactures systems for the non-cutting and burr-free cutting of metal pipes and tubes. For ...

ROBUST - Foil cutting machine with part length measurement

ROBUST is specialized in slitting machines and winding technology. The product range includes roll slitting and windi...

EXTRUDEX - extruder with guillotine and measuring unit

EXTRUDEX is a manufacturer of extruders and cutting devices. EXTRUDEX extruders are mainly used in the automotive and...

Matching Products and Services

Length-Section Light Scanner
Discrete Part Length Measurement System

  • Non-contact length measurement of discrete parts in the production process or in a cycle
  • Highly accurate measurement of discrete parts, good/bad sorting and documentation
  • LED-based length-section light scanner measurement technology, maintenance-free, optical, permanently calibrated
  • Optical micrometer for the length measurement of profiles, tubes, plates

ELOVIS Services

ELOVIS offers the following services in the field of discrete part length measurement:

  • Advice on general cargo length measurement
  • Measurement Services
  • System Rental
  • OEM sensor developments in the field of piece length measurement


Always available for you:
Bernd Engelsdorf


Vincenz-Prießnitz-Straße 1
76131 Karlsruhe, Germany

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

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