Look but don’t touch: The SICK SPEETEC® speed and length sensor

With the SPEETEC® non-contact sensor for speed and length measurement, SICK has added a compact eye-safe laser surface motion sensor to its portfolio, able to measure a wide range of continuous, web-fed or cut-to-length materials down to a resolution of 4 µm.

The innovative SPEETEC® combines unprecedented affordability with precision surface measurement for process control or quality inspection tasks in food manufacturing packaging applications. The Class 1 eye-safe infra-red laser eliminates the need for special guarding or safety measures required by many conventional velocimeters.

The SPEETEC® uses the Laser Doppler principle to work at speeds between 0.1 and 10 m/s to measure directly on the material surface with an accuracy of 0.1%, and a repeatability of 0.05%.  Typically, Return on Investment can be achieved in under 12 months, according to Darren Pratt, SICK’s UK product manager for Motion Control Sensors.

“The performance and affordability of the SICK SPEETEC® will come as a surprise to many packaging machine builders and operators,” he said.  “It therefore promises new automation opportunities, as well as process improvements by achieving higher levels of measurement accuracy and throughput speeds which were not possible previously.

“The SPEETEC®’s non-contact measurement principle means it can be used where a measuring wheel in contact with the substrate would damage the material, particularly important, for example for delicate, smooth or soft substrates.

“There is no need for any marks or scales on the substrate itself, while the high signal quality and resolution helps to deliver optimum print results. What’s more, unlike a measuring wheel which can wear over time due to abrasion with the material surface, the SPEETEC®’s non-contact measurement function cannot be impaired in this way, so maintenance and downtime is reduced.”

Product testing and field trials have already shown the SPEETEC® to be accurate even when measuring substrates with challenging, highly reflective, dark-black or uneven surfaces. SICK also expects to see it being installed where rotary encoders or measuring wheels would be unreliable due to slippage of the material.”

The SICK SPEETEC® is easy to mount with a working distance of 50mm (± 5mm). The rugged aluminium housing measures just 140mm x 95mm x 32.5mm. The SPEETEC® can be set up in a matter of minutes and does not require any supplementary electronics to process the signal output.  The Laser Doppler measurement is automatically converted onboard the sensor into TTL/HTL signals identical to those of an incremental encoder, so that they can be easily integrated into the machine control system.

Darren Pratt is offering 30-minute one-to-one online meetings including a live demonstration with anyone who would like to discuss whether the SPEETEC® is right for their application.

For more information please contact Andrea Hornby on 01727 831121 or email andrea.hornby@sick.co.uk.



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