The Leuze HT3C.XL/4P (Part Number: 50129384) is a specialized diffuse reflection photoelectric sensor with active optical background suppression belonging to Leuze electronic's proven Series 3C (Germany). The standout innovation of this model is its "Extra Long Light Spot" (XL) technology, which projects a wide rectangular light band (measuring 3 mm x 40 mm at 50 mm distance), specifically developed to solve demanding detection challenges involving transparent, perforated, slotted, or irregular surfaces.

BREAKTHROUGH FEATURES AND OPERATIONAL ADVANTAGES:
1. Extra Long Rectangular Light Spot (XL Version):
Unlike standard tiny round light spots that can fall through holes or pass straight through clear plastic bottles without triggering, the 40 mm wide rectangular light beam spans across the target structure. This ensures completely stable and flicker-free detection of transparent PET bottles, clear glass containers, transparent wrapping foils, perforated sheet metals, and slotted component carriers.
2. Geometric Background Suppression & Low Black-White Error:
Operating on optical triangulation principles, the sensor actively ignores bright reflective background walls, metallic machine surfaces, or moving conveyor belts. It maintains a low black-white optical error (< 10% up to 60 mm), ensuring consistent target detection regardless of surface color or reflectivity variations.
3. Dual PNP Antivalent Outputs (/4P):
Features two complementary PNP digital switching outputs (1x Light-switching and 1x Dark-switching), allowing simultaneous transmission of antivalent signals to PLC control systems for comprehensive operational monitoring and cable-break diagnostics.
4. High-Speed 1,000 Hz Switching Frequency & 0.5 ms Response Time:
With an ultra-fast response rate of 0.5 ms, it guarantees reliable part tracking and defect-free counting on high-speed bottling, packaging, and sorting lines without missing a cycle.
5. Multiturn Potentiometer for Easy Range Adjustment:
Equipped with an integrated multiturn potentiometer, enabling intuitive and precise adjustment of the sensing range between 20 mm and 100 mm to accommodate diverse target profiles.
6. Industrial Washdown Durability – IP67, IP69K & ECOLAB Certified:
Constructed with a robust PC-ABS plastic housing and a chemical-resistant PMMA lens window rated IP67 and IP69K (resisting high-pressure and high-temperature washdowns). ECOLAB certification verifies full material compatibility with harsh industrial cleaning agents in food and beverage plants.

TYPICAL INDUSTRIAL APPLICATIONS:
• Beverage & Bottling Machinery: Transparent PET bottle detection, glass container presence sensing, and cap verification on infeed belts.
• Packaging & Printing Lines: Clear film and shrink wrap sensing, blister pack verification, and glossy corrugated box detection.
• Factory Automation & Precision Mechanics: Sensing perforated metal sheets, grid component trays, and slotted parts carriers.
• Food & Pharmaceutical Processing: High-reliability operation in hygienic washdown environments requiring frequent CIP cleaning.

• Manufacturer: Leuze electronic
• Part Number / Model: HT3C.XL/4P
• Order Number (Part no.): 50129384
• Series: Series 3C
• Brand Origin: Germany
• Operating Principle: Diffuse reflection principle with background suppression
• Special Version: Extra Long light spot (XL)
• Light Source: Pulsed Visible Red LED (633 nm)
• Optical Safety Group: Exempt group (EN 62471)
• Light Spot Geometry: Rectangular
• Light Spot Size: 3 mm x 40 mm (at 50 mm distance)
• Beam Path: Divergent
• Black-White Optical Error: < 10% up to 60 mm
• Guaranteed Operating Range (White 90%): 0.005 ... 0.05 m (5 mm – 50 mm)
• Guaranteed Operating Range (Gray 18%): 0.005 ... 0.045 m (5 mm – 45 mm)
• Guaranteed Operating Range (Black 6%): 0.005 ... 0.04 m (5 mm – 40 mm)
• Operating Range Limit: 0.005 ... 0.1 m (5 mm – 100 mm)
• Adjustment Range: 20 ... 100 mm (via Multiturn potentiometer)
• Supply Voltage (UB): 10 ... 30 V DC (Residual ripple 0 ... 15%)
• Open-Circuit Current: 0 ... 15 mA
• Digital Switching Outputs: 2 independent outputs (Antivalent)
• Switching Output 1: Transistor PNP, Light switching
• Switching Output 2: Transistor PNP, Dark switching
• Max Switching Current: 100 mA per output
• Switching Frequency: 1,000 Hz (1 kHz)
• Response Time: 0.5 ms
• Readiness Delay: 300 ms
• Protective Circuits: Polarity reversal protection, short-circuit protection
• Status Indicators: 2 LEDs (Power and Switching Status)
• Connection: 2,000 mm (2 m) PVC cable, 4-wire (conductor cross section 0.2 mm²)
• Dimensions (W x H x L): 11.4 mm x 34.2 mm x 18.3 mm
• Net Weight: 50 g
• Mounting Type: Through-hole mounting (Recommended M3 torque: 0.9 N·m)
• Housing Material: PC-ABS Plastic (Color: Red RAL 3000)
• Lens Cover Material: Optical PMMA Plastic
• Ingress Protection: IP 67, IP 69K (Resistant to high-pressure washdown)
• Protection Class: Class III
• Chemical Resistance Certification: ECOLAB
• Operating Temperature Range: -40 °C ... +60 °C
• Storage Temperature Range: -40 °C ... +70 °C
• Standards & Certifications: IEC 60947-5-2, cULus Listed