Retro-Reflective Area Sensors feature 6 beam array.

Press Release Summary:

RLG28 Sensors feature 6 light beams that generate 60 mm field for detecting objects as small as 12 mm in dia over entire 0-4 m sensing range. Six beam design detects leading edges of objects regardless of their shape, position, or texture, and polarizing filter eliminates false readings when used with shiny objects such as foils, Mylar, and certain plastics. Shock and vibration immune per EN 60947-5-2, sensors feature low-end temperature rating of -30°C for freezer/cooler environments.

Original Press Release:

Consistently and Reliably Detect Objects of Varying Shapes, Sizes and Textures Over Entire Sensing Range, with RLG28 Retro-Reflective Area Sensors from Pepperl+Fuchs

TWINSBURG, OH - Pepperl+Fuchs introduces RLG28 Retro-Reflective Area Sensors. RLG28 retro-reflective area sensors feature six light beams that generate a constant 60 mm detection field to consistently detect objects as small as 12mm in diameter over the entire 0 ... 4 m sensing range. They are a perfect sensing solution in material handling and other applications where single beam retro-reflective sensors have reached their functional limitations, or in applications that would otherwise require costly light grids. RLG28 sensors are cULus listed.

"RLG28 retro-reflective area sensors are particularly unique in their ability to reliably detect even small and odd-shaped objects over the full 4 meter sensing range. Competitive sensors will sometimes indicate they can detect a specified size target, but even then it's only at a specified distance from the sensor," says Jeff Allison, Product Manager. "And unlike relatively inflexible single-beam photoelectric sensors, RLG28 area sensors provide extremely accommodating operation by consistently detecting leading edges of objects regardless of their shape, position or texture, and with no re-adjustment or re-alignment needed," says Allison.

With some retro-reflective sensors, shiny objects such as foils, Mylar and certain plastics can be erroneously "seen" as the sensor's reflector. RLG28 sensors, however, have a polarizing filter that eliminates the potential for such false readings. These retro-reflective area sensors automatically adjust excess gain based on ambient conditions such as lens contamination or temperature changes, enabling constant operation without requiring readjustment. They also offer enhanced status LED indication, better shock and vibration immunity per the international standard EN 60947-5-2, and better low-end temperature rating (to -30°C) for freezer/cooler environments.

"Having only one housing, mounting slots instead of holes, P+F's exclusive 4-in-1(TM) output, brighter and larger light spots, and a single-step automatic teach all help make RLG28 area sensors significantly faster to mount, wire, align, and teach than previous area sensing alternatives, arrays of single-beam photoelectric sensors, and thru-beam light grids. In fact, they can reduce installation time by 83% compared with multiple single-beam sensors, or roughly 50% compared with a thru-beam light grid. And RLG28 sensors are up to 67% lower in cost than comparable arrays of 6 single-beam photoelectric sensors or thru-beam light grids," explains Allison.

RLG28 sensors also feature a standard photoelectric sensor housing that is mechanically and electrically compatible with today's most commonly available photoelectric sensors. As a result, they facilitate fast and easy replacement of single-beam photoelectric sensors.

"The RLG28 series is a perfect sensing solution in material handling applications, and specifically for detecting the leading edges of pallets on palletizers. They are also helpful for identifying protruding pallets," says Allison. Their functionality also makes them well suited for use in packaging, automotive and paper applications that require:

o sensing objects with changing shapes or heights, such as pouches or bags

o verifying the presence of objects with various textures such as reflective chrome, glossy foil wrap, or soiled or damaged trays

o verifying the presence of objects with variable positions, such as a stack of sheet metal bouncing as it moves on a conveyor

o detecting objects with irregular or undefined edges, such as stacks of newspaper

o detecting falling objects, or ejection control

Pepperl+Fuchs is a world leader in the design, manufacture and application of high quality factory and process automation products and services. Pepperl+Fuchs pioneered the development of proximity sensors 50 years ago, and has set the standard for innovation and quality ever since.

Pepperl+Fuchs, 1600 Enterprise Parkway, Twinsburg, OH 44087; (330) 486-0001; fax: (330) 405-4710;;

For Lead processing: Email or send all leads to:; Pepperl+Fuchs, 1600 Enterprise Parkway, Twinsburg, OH 44087, Attn: Tonya Maley. Please identify leads with item code PFA653 for fastest lead processing.

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