The Leuze IPRK 46B/4,200-S12 S-Ex n is a high-performance polarized retro-reflective photoelectric sensor from the acclaimed Series 46B heavy-duty family, engineered by Leuze electronic (Germany). This specialized instrument is constructed specifically for safe and dependable continuous operation in potentially explosive industrial atmospheres, fulfilling strict international explosion-protection certifications for ATEX/IECEx Category 3G (Zone 2 - Flammable Gas/Vapor environments) and Category 3D (Zone 22 - Combustible Dust environments).

Featuring advanced retro-reflective optics integrated with an optical polarization filter, the IPRK 46B/4,200-S12 S-Ex n projects a highly visible red light beam that makes alignment with retro-reflectors effortless even over long operating distances. The polarization filtering mechanism completely prevents false switching signals caused by highly reflective, glossy metal parts, transparent shrink-wrap films, or galvanized steel components. The substantial optical excess gain of Series 46B ensures consistent and flawless detection performance even in dusty, dirty, or humid industrial environments.

Encased in a rugged, impact-resistant industrial polymer housing with an ingress rating of IP67, this sensor withstands harsh mechanical stress and fluid splashes. It delivers a fast switching transistor PNP output with a rapid 1 ms response time to reliably track high-speed conveyor lines. With an integrated 200 mm tail cable terminated in a standardized 4-pin M12 (S12) connector, it provides vibration-proof connectivity and streamlined maintenance across chemical plants, paint finishing lines, woodworking facilities, animal feed mills, and bulk material handling systems.

• Manufacturer: Leuze electronic (Germany)
• Series: Series 46B Heavy-Duty
• Model: IPRK 46B/4,200-S12 S-Ex n
• Measurement Principle: Polarized retro-reflective photoelectric sensor
• Explosion Protection Rating (Ex category): ATEX / IECEx Category 3G (Zone 2) & Category 3D (Zone 22)
• Ex Marking: II 3G Ex nA II T4, II 3D Ex tD A22 IP67 T85°C
• Light Source: Visible Red LED
• Optical Wavelength: 630 nm
• Guaranteed Operating Range (with standard reflector): 0.1 ... 18 m (depending on reflector model)
• Operating Range Limit (Typical): Up to 24 m
• Supply Voltage: 10 ... 30 V DC (incl. residual ripple)
• Digital Switching Output: 1x PNP transistor output
• Switching Function: Light/Dark switching
• Max. Switching Current: 100 mA
• Switching Frequency: 500 Hz
• Response Time: 1 ms
• Readiness Delay: 300 ms
• Status Indicators: Yellow LED (switching state), Green LED (power & operational reserve)
• Housing Material: Reinforced industrial plastic (PBT / PC)
• Ingress Protection Rating: IP67
• Electrical Connection: 200 mm cable with M12 connector, 4-pin (S12)
• Operating Ambient Temperature: -20 °C ... +50 °C
• Dimensions (W x H x L): 18.5 mm x 76.2 mm x 44 mm
• Net Weight: Approx. 85 g
• Conformity & Certifications: CE, c UL US, ATEX EN 60079-0 / EN 60079-15 / EN 60079-31, IEC 60947-5-2