Pepperl+fuchs Phototalk

In this episode, Helge and Michael discuss contrast sensors. A contrast sensor is a special type of diffuse mode photoelectric sensor used to detect a difference between two colors. These 2 colors are commonly referred to as mark and background. The detection process evaluates the brightness, or light level received, from a sample presented to the contrast sensor. For each new sample presented, the contrast sensor compares the new sample value to what it was taught, to determine if it is more like the mark or more like the background. --High-efficiency sensor used to detect a difference in brightness between 2 colors - Mark and Background --Commonly referred to as a Print-Mark Sensor --Contrast sensors provide lightning fast response times