Color Mark Sensor By P. G. Electronics

Opto-electronics visible light sensors- ECR-501, ECG-501, ECU-501, ERA-101 are specifically designed to sense only the desired colour amongst others in the background. Further the function of its sensors should not be affected by normal daylight. Mark sensing is the most common requirement utilized in Packaging industry. To sense a colour mark in a background of contrast colour or different colour, ECG-501, ECR-501 and ECU-501 are the most commonly used. To choose a mark with only slight contrast background is achieved by special sensors. Besides on-line sensing of objects in packaging industry, these colour sensors are also supplied for identifying and sorting colours of bigger objects in a production line. Teach-button method is used for this purpose. A robust edge guide sensor with analog output ERA-101 is used in feedback loop to control the straight flow of web on a machine. It has a visible light spot to facilitate correct installation.