The BOL 27K advanced measuring line sensor detects product width, edge detection, hole location, and web loop tension. With both discrete and analog outputs, this retroreflective photoelectric sensor projects a measuring line of light onto a strip of special reflective tape, which it then uses to measure and locate key attributes of an object. The sensor’s 0.15 mm resolution makes it suitable for error proofing, sheet feed control, web control, and a range of packaging tasks.
The BOL 27K operates in three basic modes. Edge position mode detects the position of an object passing over the tape. Once the edges of the reflective tape are calibrated, the percentage of the tape covered by an object gives the sensor an accurate location of the object’s edge. This mode can also give 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 sensor the width of the object.
Width detection mode gives the distance between the two edges of an object, such as a pipe or a group of objects, including stacks of blister packs.
Balluff Inc., a U. S. subsidiary of Balluff GmbH, Neuhausen, Germany.
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Filed Under: Semiconductor, Sensors (position + other)