The Leuze HRTR 3B/66-S-S8 (Part Number: 50107246) is a high-precision diffuse reflection photoelectric sensor with active background suppression from Leuze electronic's proven Series 3B (Germany). Featuring a specialized "Small Light Spot" (-S) optical design and an integrated M8 connector plug (-S8), this sensor provides exceptional detection accuracy for micro-components and targets accessed through narrow machine apertures.

KEY PRODUCT FEATURES AND OPERATIONAL ADVANTAGES:
1. Precision Focused Small Light Spot (S Version):
Utilizing an advanced 620 nm red LED light source with collimated optics, it projects a focused round light spot measuring only 4 mm in diameter at a distance of 100 mm. This narrow beam profile prevents false triggers caused by target perimeter overshoot when scanning micro-components, IC pins, and fine wires.
2. Active Background Suppression & Low Black-White Error:
Operating on geometric triangulation, the sensor completely suppresses reflective metal backgrounds and moving conveyor structures beyond the set scanning range. With a minimal black-white error (< 10%), it maintains uniform detection across matte black objects to highly polished metal surfaces from 5 mm up to 200 mm.
3. Dual Universal Push-pull Digital Outputs (/66):
Features two independent Push-pull switching outputs:
- Output 1: Light switching (PNP) / Dark switching (NPN)
- Output 2: Dark switching (PNP) / Light switching (NPN)
Provides seamless compatibility with both PNP and NPN PLC architectures without extra interface wiring.
4. Ultra-Fast 1,000 Hz Switching Frequency & 0.5 ms Response Time:
Designed for high-throughput automated machinery, ensuring reliable detection and zero-miss counting on high-speed SMT assembly, stamping presses, and rotary indexing tables.
5. Integrated Solid M8 4-Pin Connector (S8):
Features an integrated M8 male connector built directly into the housing, ensuring clean, compact cable routing, eliminating cable stress damage, and enabling rapid plug-and-play installation during routine maintenance.
6. Rugged IP67 Industrial Construction:
Enclosed in high-grade PC-ABS housing with a scratch-resistant PMMA lens window, offering high shock and vibration resistance across operating temperatures from -30 °C to +55 °C.

TYPICAL INDUSTRIAL APPLICATIONS:
• Electronics & Semiconductor Manufacturing: Micro-component detection on SMT pick-and-place systems, IC pin alignment, and wafer presence verification.
• Precision Tooling & Machine Building: CNC workpiece edge alignment, precision screw presence checking, and micro-spring inspection.
• Medical & Pharmaceutical Automation: Syringe needle presence, vial cap verification, and blister pack inspection.
• Printing & Packaging Machinery: Contrast registration mark sensing and edge detection on shiny or dark packaging foils.

• Manufacturer: Leuze electronic
• Part Number / Model: HRTR 3B/66-S-S8
• Order Number (Part no.): 50107246
• Series: Series 3B
• Brand Origin: Germany
• Operating Principle: Diffuse reflection principle with background suppression
• Special Version: Small light spot (S)
• Light Source: Visible Red LED (620 nm)
• Optical Alignment: brightVision® technology
• Light Spot Geometry: Round
• Light Spot Size: Diameter 4 mm (at 100 mm distance)
• Operating Range: 0.005 ... 0.2 m (5 mm – 200 mm)
• Operating Range Limit: 0.005 ... 0.2 m (5 mm – 200 mm)
• Black-White Error: < 10% (at 200 mm)
• Supply Voltage (UB): 10 ... 30 V DC (Residual ripple 0 ... 15%)
• Open-Circuit Current: 0 ... 15 mA
• Digital Switching Outputs: 2 independent outputs
• Switching Output 1: Transistor Push-pull (Light switching PNP / Dark switching NPN)
• Switching Output 2: Transistor Push-pull (Dark switching PNP / Light switching NPN)
• Switching Frequency: 1,000 Hz (1 kHz)
• Response Time: 0.5 ms
• Protective Circuit: Short-circuit protection, polarity reversal protection
• Connection: Integrated M8 connector, 4-pin male (A-coded)
• Housing Dimensions (W x H x L): 11 mm x 32 mm x 17 mm
• Net Weight: 10 g
• Housing Material: PC-ABS Plastic (Color: Red RAL 3000)
• Lens Cover Material: PMMA Plastic
• Ingress Protection: IP 67
• Protection Class: Class III
• Operating Temperature Range: -30 °C ... +55 °C
• Standards & Certifications: IEC 60947-5-2, cULus Listed