Baumer (Southington, CT) offers the MA20 measuring wheel encoder for flexible position and speed feedback for conveyor systems. The two-in-one device combines a high-resolution optical incremental encoder and a precise measuring wheel. Capable of resolutions as high as 25,000 ppr, the encoder provides precise measuring results at very low conveyor speeds. The encoder’s HEX switch allows the user to select from 16 predefined resolutions between 100 and 25,000 ppr.

Measuring 200-mm in circumference, the wear-resistant wheel is available in a variety of rubber hardnesses (Shore durometer between 40 or 70) for adhesion to conveyor materials. A pivoting, height-adjustable arm bracket allows for easy installation. The encoder operates at supply voltages between 4.75 and 30 VDC, and features an 8-pin M12 connector. The encoder’s IP64 rating and ability to withstand ambient temperatures from -20 °C to +85 °C allow it to operate in harsh environments.

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Motion Control & Automation Technology Magazine

This article first appeared in the October, 2012 issue of Motion Control & Automation Technology Magazine.

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