The Leuze RK 72/4-200 L.2 (RK72/4-200L.2) energetic diffuse reflection light scanner is part of the established Series 72 engineered by Leuze (Germany), an internationally renowned manufacturer of high-precision sensor systems for industrial automation. Designed to master demanding industrial environments, the RK 72 family delivers outstanding optical consistency, rugged mechanical durability, and uninterrupted long-term performance across varied manufacturing lines.

Operating under the energetic diffuse reflection principle, the sensor emits a modulated infrared LED beam with an 880 nm wavelength. This high-efficiency optical setup ensures dependable contactless detection of multiple material textures, ferrous/non-ferrous metals, polymers, and is exceptionally proficient at detecting labels on glass substrates or transparent packaging. It offers an effective scanning range of 0 to 200 mm (with a maximum typical limit extending up to 340 mm on 90% white reflective surfaces). An integrated 270° potentiometer allows maintenance engineers to execute fine-tuned sensitivity adjustments tailored precisely to target workpieces.

Built for harsh factory conditions, the Leuze RK 72/4-200 L.2 features a slim-profile diecast metal housing combined with a heavy-duty scratch-resistant optical glass lens cover. Encapsulated to achieve an IP67 protection rating, the device remains fully operational within a wide temperature envelope from -20°C to +60°C. Its internal electronic circuitry is equipped with built-in short-circuit and polarity reversal protection, powering a reliable PNP transistor switching output (up to 100 mA load) with reversible Light/Dark functionality, ensuring seamless integration into PLC platforms and automated control architectures.

• Brand: Leuze (Germany)
• Product Series: Series 72
• Model Code: RK 72/4-200 L.2 (RK72/4-200L.2)
• Operating Principle: Energetic Diffuse Reflection Principle
• Light Source: Modulated Infrared LED
• Wavelength: 880 nm
• Guaranteed Operating Range (White 90%): 0 ... 200 mm
• Typical Scanning Range Limit (White 90%): 0 ... 340 mm
• Scanning Range (Gray 18%): 0 ... 140 mm (Limit: 250 mm)
• Scanning Range (Black 6%): 0 ... 110 mm (Limit: 200 mm)
• Operating Supply Voltage (UB): 12 ... 30 V DC (including max 15% residual ripple)
• No-load Bias Current: ≤ 50 mA
• Number of Digital Switching Outputs: 1 output
• Switching Element: PNP Transistor
• Maximum Output Load Current: 100 mA
• Switching Function: Light/Dark switchable by polarity reversal
• Protective Circuits: Short-circuit protected & Polarity reversal protection
• Switching Frequency: 100 Hz
• Response Time: 5 ms
• Sensitivity Adjustment: 270° rotary potentiometer
• State Indicator: Red LED indicating signal reflection
• Electrical Connection: Standard industrial cable (4 x 0.25 mm²)
• Housing Construction: Slim cubic design
• Housing Material: Diecast metal
• Lens Cover Material: Optical glass
• Dimensions (W x H x L): 15 mm x 90 mm x 35 mm
• Net Weight: Approx. 150 g
• Degree of Protection: IP67
• Optical Safety Class: LED Class 1 (acc. to EN 60825-1)
• Ambient Operating Temperature: -20 °C to +60 °C
• Storage Temperature: -30 °C to +70 °C