Balluff’s unique BOL 27K advanced measuring line sensor provides the most cost effective way to sense product width, edge detection, hole location, and web loop tension. 

Florence, KY (April 2007): With both discrete and analog outputs, this specialized retroreflective photoelectric sensor projects a measuring line of light on to a strip of special reflective tape which it uses to measure and locate key attributes of an object. 

The BOL 27K operates in three basic modes.  Edge position mode detects the position of an object passing over the tape – perfect for strip feed positioning of objects made of materials as different as paper to steel.  Once the edges of the reflective tape are calibrated, the percentage of the tape covered by an object gives the BOL 27K an accurate location of the object’s edge without the need of feeler gauges or mechanical contact with the object.  This mode can also provide the distance from a hole to one of the edges of the object. 

Center positioning mode detects the center of an object independent of the object’s width.  Once the length of the reflective tape is calibrated, the percent of tape blocked by the object gives the BOL 27K the width of the object.  This provides a lower cost width measurement than can be had with a vision system.

Width detection mode provides the distance between the two edges of an object, such as a pipe or a group of objects such as stacks of blister packs.  For objects that are more than 150 mm wide, two BOL 27Ks can be used in concert to provide the measurement.

The 0.15 mm resolution precision of the sensor makes it ideal for error proofing, sheet feed control, web control, and a range of packaging tasks.

More information can be found at www.balluff.com/linesensor.

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Balluff Inc., the U.S. subsidiary of Balluff GmbH, Neuhausen, Germany, is a leading manufacturer of a wide range of inductive, optical, capacitive and magnetic sensors as well as linear position transducers and ID systems.  Balluff products for OEM and factory floor solutions are used to control, regulate, automate, assemble, position, and monitor manufacturing, assembly, and packaging sequences for industries including metalworking, automotive, plastics, material handling, wood processing, aerospace, electrical, and electronics.

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Editors:  please contact Tom Draper, (1 800 543-8390) for clarifications and additional information, or e-mail to Tom.Draper@Balluff.com

Direct reader service inquiries to:  Press Manager
Balluff Inc.
8125 Holton Drive
Florence, KY 41042

In Canada only, contact Norman J. Clarke, President, Balluff Canada, 2840 Argentia Road, Unit # 2, Mississauga, ON  L5N 8G4, Phone 1-800-927-9654 or
Tel: 905-816-1494, 905-816-1411, E-mail: balluff.canada@balluff.ca