Background Suppression with Photoelectric Sensors – Challenges and Solutions

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By Gary Frigyes, Product Manager; Ed Myers, Product Manager; and Jeff Allison, Product Manager, Pepperl+Fuchs

When using photoelectric sensors in simple diffused mode, the sensor uses the target to reflect light back to itself, eliminating the need for a secondary device such as a reflector. But the ability to precisely control the sensing range is not possible even if the sensor offers a sensitivity adjustment.