NG # 04156-HW-PEP-039
The DK20-2497(/49) Print Mark Contrast Sensor is a compact optical sensor that detects print marks using RGB LED technology and a diffuse sensing principle. It features a detection range of 9.5 mm, automatic static teach-in for easy setup, and a fast 30 µs response time for high-speed scanning applications. The device supports both PNP and NPN outputs and connects via an M12 connector, making it suitable for modern industrial automation systems.
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Get A QuoteThe Pepperl+Fuchs DK20-2497(/49) Print Mark Contrast Sensor is a high-speed optical sensor designed for reliable detection of print marks on packaging, labels, and industrial materials. It uses RGB LED light sources to identify contrast differences between printed marks and background surfaces, ensuring accurate mark detection even in fast-moving production lines. With a very short response time and automatic teach-in functionality, the sensor can quickly adapt switching thresholds for different materials and colors.
This sensor is widely used in packaging machines, printing systems, and automation processes where precise positioning and mark recognition are required. Its robust industrial design, IP67 protection rating, and versatile output options make it suitable for demanding industrial environments.
· Product Type: Print mark contrast sensor
· Manufacturer: Pepperl+Fuchs
· Model: DK20-2497(/49) Print Mark Contrast Sensor
· Sensing Principle: Diffuse mode optical detection
· Detection Range: 9.5 mm ± 3 mm
· Light Source: LED
· Light Type: Visible RGB light (green, red, blue), modulated
· Light Spot Size: Rectangular 1 mm × 4 mm
· Response Time: Approximately 30 µs
· Teach-In Method: Static teach-in with automatic switching threshold adaptation
· Output Type: PNP and NPN, short-circuit protected
· Switching Mode: Light-on / Dark-on selectable
· Operating Voltage: 1030 V DC
· Connection Type: 5-pin M12 connector
· Ambient Light Immunity: Up to 7000 lux continuous light
· Degree of Protection: IP67
· Housing Material: Glass-fiber reinforced PC (Makrolon)
· Optical Face: Plastic lens
· Shock Resistance: 40 g (IEC / EN 60068)
· Vibration Resistance: 10150 Hz, 5 g (IEC / EN 60068-2-6)
· Safety Parameter (MTTFd): 650 years
· Mission Time: 20 years
· Compliance Standards: EN 60947-5-2 / IEC 60947-5-2
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