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Non-contact Length Measurement

MID 2014/32/EU (form. MID 2004/22/EC) - PTB
Non-contact Length Measurement
Optical Length Measurement
Contactless Length Gauge
Laser-Doppler Technology
Laser Encoder

  • Spool length measurement (web material, belt, conveyor material)
  • Cut-to-length control
  • Length measurement of discrete parts and goods in pieces
  • Length measurement of incoming goods and issued goods
  • Length measurement for waste reduction and production data acqusition
  • Measurement of differences in length for process control (elongation; shrinkage)
  • Accredited systems with EU qualification approval for non-contact length measurement according to MID 2014/32/EU (form. MID 2004/22/EC)
  • Continuous, durable and endless length measurement

  • Paper and cardboard (roll length, format length, ...)
  • Print industry (rolls, lables,...)
  • Plastic and extrusion (foil, film, profile, tube,...)
  • Textile (technical textiles, woven, non-woven,...)
  • Carpet and flooring (rolls, goods in pieces,…)
  • Metal (coil, sheet metal, tube, profile, wire, cable,...)
  • Timber (veneer, timber pieces, plate,...)
  • Construction and insolation material (web, rolls, plates,...)
  • Cable and wire (rolls, pieces,…)
 (→ examples pictures and descriptions)

The µSPEED® product family is used for non contact measurement of length and speed of a variety of moving surfaces such as web material, winded material and goods in pieces. µSPEED sensors replace contact wheels and other tactile measurement systems, which due to slippage, aging or dirt built up, do not work reliably. µSPEED avoids the dependancy of the measurement on the type of material, surface or thickness, or the injury of the surface of the material by traces or scratches. The optical length gauge µSPEED  works on all types of materials, surfaces, structures and colours without parameter setting and independently from material and transportation conditions. Materials to be measured can be solid, smooth, dry or wet. They can be transported on conveyer belts, produced as web, tube or wire, can be endless or piece goods. Applications include the measurement of spool length, cut-to-length control, encoder calibration as well as production and process surveillance e.g. by measurement of differential speed. Production machines as well as inspection, winding and slitting machines can easily be equipped with µSPEED systems. µSPEED systems are both maintenance free and long term calibrated. µSPEED systems are able to reach an accuracy of better than ± 0.1 at length or speed, which has to be measured. µSPEED systems, which are based on laser-doppler technology, set standards regarding size, ease of use and lifetime. µSPEED is available in a version, which is certified by the national metrological institution of Germany PTB (Physikalisch Technische Bundesanstalt) - now also according to MID (measurement instruments directive) 2014/32/EU standard (form. MID 2004/22/EC). Range of applications: Spooling, winding, roll winder, unwinder, slitter rewinder, short roll winder, re-reeler, sliding winder, cutting maschine, cross cutter, sorting cross cutter, inspection machine, ...

Length gauge with display - µSPEED + CONTROLLER

µSPEED + CONTROLLER is a stand-alone sensor system equipped with numerous control functions as well as the possibility of connecting printers and other equipments directly. µSPEED + CONTROLLER is available with the EU approval capability according to MID 2014/32/EU standard (form. MID 2004/22/EC), for certifiable non-contact length measurement.

  • measurable speed range: ± 4800 m/min

  • min. measurement speed: 0 m/min
  • direction recognition: option

Bidirectional Length Measurement - µSPEED-PRO

The µSPEED-PRO® with bidirectional reading is used as a direct replacement for tactile driven encoders in difficult transport and conveying processes.
  • measurable speed range: ± 600 m/min
  • min. measurement speed: 0 m/min
  • non-contact direction recognition

Length Measurement Counter - MID-CNT

The Measurement Counter MID/CNT can be operated both with a contact wheel with rotating encoder or with µSPEED laser devices. The MID-CNT is designed for calibrated length measurement recording in connection with IT-Systems. Calibrated length measurement is necessary if selling materials in the unit of meters to customers within Europe acc. to MID 2014/32/EU (form. MID 2004/22/EG; calibration approval).

  • tactile length measurement by contact wheel / rotating encoder
  • for applications without risk of slippage
  • for applications with moderate acceleration and moderate speed
           → CONTACT

Messrad mit MID-Zähler-1

Length gauge - µSPEED-smartsensor

µSPEED® is used as a direct replacement for tactile driven encoders. The added value towards a measurement by wheel or by machine drive can be found in the material independent and longterm high accurate measurement as well in the self checking function of the sensor.

  • measurable speed range: ± 4800 m/min
  • min. measurement speed: 0 m/min
  • direction recognition: option

Discrete Part Length Measurement - SLM

The SLM system is designed for high accurate discrete part length measurement. With a resolution of 1/100 mm and a accuracy of better ± 1/10 mm (per meter), SLM is used for manual random sample testing as well as for 100 % inline length check during production or before sorting at material speed up to 4 m/s.

  • lengths in between typ. 10 mm to 4876 mm
  • non-contact discrete part measurement
  • measurement of fix lengths
  • tube length measurement
  • profile length measurement
  • measurement of sawed parts
  • measurement of turned parts
  • length measurement of paper cores, rolling cores
  • automatic 100m weight measurement
Discrete Part Length Measurement non-contact

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