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Beta LaserMike Inc.
8001 Technology Blvd.
Dayton, OH 45424
937-233-9935

Dayton, OH – February 12, 2013 – Beta LaserMike, a leading global provider of precision measurement and control solutions, offers the LaserSpeed® Differential Speed Measurement System to help converters and packaging film producers accurately control the web tension of products during production.

Most converters and packaging film producers currently control web tension by either trusting the speed that their drives are reporting or using a mechanical contact encoder. While drives are becoming more sophisticated and more accurate every year, the simulated encoder output from the drive cannot compensate for slippage. Every product has some amount of slippage on the drive roller. The amount that the product slips can change based on texture, product composition, or even tension at other points on the production line. Contact encoders experience similar issues. This slippage results in costly product give-away. Contact measurement techniques can also affect material quality and create waste because of damage to the product’s surface.

Beta LaserMike’s Differential Speed Measurement System solves this problem by measuring the differential speed of the web at two different locations without making contact with the product. The system uses the LaserSpeed Length Differential Indicator (LDI) and two LaserSpeed non-contact laser encoders to measure any differences in line speed. The LaserSpeed encoders are placed at two critical measurement points on the line, for example at the exit side on the unwind station and the input side of the rewind station. Since the LaserSpeed encoder measures the product itself and not the drive roller, slippage is not a problem. Speed measurements are captured with better than ±0.05% accuracy and 0.02% repeatability up to measurement speeds of 39,400 ft/min (12,000 m/min), enabling converters and packaging film producers to precisely monitor and control the required amount of tension on the web.

The Differential Speed Measurement System can be interfaced with a PLC to control the differential speed and can be connected to a light stack or alarm to notify an operator when the differential speed exceeds tolerances. The LaserSpeed encoder is designed for heavy industrial environments, is easy to install, and is factory calibrated for low-maintenance operation. The measurement is performed optically, so there are no parts to wear out.

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