Background Evaluation
These sensors are also insensitive to interfering objects in the background. Additionally, they are extremely accurate, their sensing range can be varied more effectively, and they have a more efficient emitted light energy which makes them insensitive to dirty or dusty lenses.
Background Evaluation Sensors
Background evaluation photoelectric sensors work by establishing a light path to a reference background object and back to the sensor. Targets are detected when they pass in front of the sensor and disrupt the light path. Even rounded or curved targets that otherwise may reflect light away from the sensor, and targets with poor reflectivity, are reliability detected.
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