Non-Contact Speed & Length Measurement

Non-Contact Speed and Length Measurement is revolutionizing manufacturing processes across industries. Traditional wheel followers and shaft encoders have long been the standard, but they come with inherent limitations that cost manufacturers time, money, and product quality. Slippage between the product and contact wheel or shaft leads to inaccurate measurements and inconsistent results. Issues of wear, contamination, or material build-up on the wheel affect calibration, requiring frequent recalibration to maintain accuracy. The constant cycle of general wear and tear, routine maintenance, and unexpected downtime leads to rejected products, quality defects, and significant loss through material give-away.

The InteliSENS range of Speed and Length gauges eliminates these problems entirely through advanced laser Doppler technology. These precision instruments are completely non-contact, meaning there is no slip, no wear, and no marking of your product surface. Whether you're processing wire, cable, web products, woven and non-woven materials, paper, plastic film, tapes, building materials, flooring, or labeling applications, InteliSENS gauges deliver consistent, reliable measurements in virtually any production environment.

Speed & Length Measurement FAQs

What does the SLmini-i4 measure?

Speed and length of flat, moving materials in production lines, without physical contact with the product.

What materials can it measure?

Paper, film, foil, gypsum board, roofing and siding, wovens, and non-wovens — any flat-surface product moving through a line.

How does it compare to a mechanical encoder?

It uses non-contact laser Doppler measurement instead of a wheel or roller, so there's no slip, no wear, and no marking of the product. Calibration is permanent rather than drifting over time like a mechanical encoder.

What's the difference between the SLmini 1220 and SLmini 3060?

The 1220 has a 120 mm stand-off distance and 20 mm depth of field, rated to 2,000 m/min. The 3060 has a 300 mm stand-off and 60 mm depth of field, rated to 3,000 m/min.

How does it integrate with existing control systems?

Via pulse outputs that simulate an encoder, Modbus RTU/TCP, PROFIBUS, PROFINET, EtherNet/IP, OPC UA, or Wi-Fi for configuration — full PLC integration or standalone use.