LEUZE PRK 3B/6.42-S8 POLARIZED RETRO-REFLECTIVE PHOTOELECTRIC SENSOR (PART NUMBER: 50112473)

DEEP PRODUCT OVERVIEW & HIGH-TRANSPARENCY APPLICATION
The Leuze PRK 3B/6.42-S8 (Order Part Number: 50112473) is a high-grade polarized retro-reflective photoelectric sensor belonging to the critically acclaimed Series 3B generation engineered by the industrial automation pioneer Leuze electronic (Germany). Enclosed in an ultra-miniaturized cubic form factor, this premium device optimizes machine layout by packing advanced optical technology into space-restricted mechanisms. It acts as a highly specialized tracking solution engineered explicitly to conquer the most challenging object-profiling problems in modern factory lines—where baseline photoelectric units fail or suffer from continuous signal noise. The uncompromised coordination between its advanced optical lens array and integrated microelectronic digital conditioning board ensures maximum data stream integrity and outstanding longevity under demanding shop floor conditions.

PREMIUM POLARIZATION FILTER & TRANSPARENT TARGET PROFILING
The primary engineering feat of the PRK 3B/6.42-S8 model is its flawless capacity to track highly transparent targets with extreme light transmittance properties. On automated processing lines, substrates like clear glass bottles, high-transparency PET containers, clear nilon shrink wraps, or glossy stretch foils are notorious for causing false triggers because the sensor's light path slices straight through the target. Leuze has resolved this by embedding a premium physical Polarization Filter alongside a high-precision threshold evaluator into the sensor's core logic. The internal optical module strictly registers specific polarized light bouncing back from a matching retro-reflective mirror (Reflector) positioned opposite, systematically isolating and rejecting false glare or specular reflections reflecting off shiny clear foils or glossy plastic walls. This guarantees 100% stable target profiling cycles across production runs.

BREAKTHROUGH COAXIAL AUTOCOLLIMATION OPTICS FOR ZERO BLIND SPOTS
Another major technical asset of the PRK 3B/6.42-S8 is its integrated coaxial Autocollimation (self-collimating) optics. Unlike standard retro-reflective structures that partition the front lens window into separate transmitting and receiving halves (creating a physical triangle of dead space immediately in front of the lens face), Autocollimation forces the projected light beam and the incoming returned rays to travel along the exact same optical axis. The practical benefit to field implementation is massive: it fully eliminates 100% of the dead zone ("blind spot") directly in front of the sensor face. This enables the hardware to profile ultra-small targets or structural hardware pieces moving right up against the lens surface with absolute certainty, granting controls engineers unrivaled layout flexibility when positioning the sensor inside hyper-confined mechanical frames.

SMART TACTILE TEACH-IN CALIBRATION & BLAZING-FAST 1000 HZ RESPONSE FREQUENCY
- Intelligent Electronic Teach-In tactile button: Moving away from baseline mechanical rotary potentiometers that are prone to breakdown due to oxidation, fluid ingress, or contact displacement under continuous machine vibration. By simply pressing and holding the integrated Teach button on the rear interface, the sensor automatically calibrates to ambient shop floor lighting, analyzes material contrast levels, and locks in the optimal electrical switching threshold for clear targets within seconds. Additionally, the Teach button features a software keypad lock function, preventing accidental recalibration or unauthorized parameter adjustments by non-specialized personnel.
- Robust high-speed 1000 Hz switching frequency performance: The internal micro-processor handles up to 1000 discrete signal state transitions every single second, yielding a micro-minimal response time of only 0.5 ms. This rapid dải tần enables the device to seamlessly capture high-velocity item movements on express F&B bottling lines, run continuous unit counts on automated high-speed packaging machinery, and execute real-time tracking over fast-moving logistics sorting belts without missing a single cycle.

MINIMALIST CUBIC HARDWARE FOOTPRINT & SEVERE TEMPERATURE RESISTANCE
- Rugged Compact PC-ABS Casing: A minimalist structural geometry measuring a mere 11 mm × 32 mm × 17 mm allows the hardware to slip effortlessly into deep machine recess spaces. The PC-ABS polymer body exhibits outstanding mechanical impact absorption, structural fatigue resistance, and heavy machine vibration damping, paired with a high-transmittance optical PMMA lens window. The electrical interface is equipped with a standard M8 quick disconnect metal male connector featuring a 4-pin layout, ensuring robust resistance against structural cable shearing under continuous torsional stress.
- Severe IP67 Ingress Protection Rating: Completely dust-tight and fully shielded against water ingress during temporary immersion under routine factory line sanitations. Operating flawlessly over an extended thermal spectrum ranging from severe freezing conditions at -25°C up to high-ambient zones of +55°C, the Leuze PRK 3B/6.42-S8 stands as the premier automated inspection component for F&B processing plants, high-volume packaging lines, and advanced logistics fulfillment networks.

OPTICAL DATA & SENSING CAPACITY
- Operating Principle: Polarized Retro-reflective Photoelectric Sensor
- Auxiliary Optical Technology: Coaxial Autocollimation architecture (Ensures 100% elimination of close-range blind spots)
- Specialized Tracking Profile: Flawless profiling of high-transparency materials (Clear glass, transparent PET bottles, shrink wrap foils, stretch wraps)
- Tracking Light Source: LED, visible red beam (Enables immediate visual target alignment during setup)
- Guaranteed Operating Range: 0 meters to 3.0 meters (When configured with standard optical reflector)
- Maximum Typical Sensing Limit: 0 meters to 3.6 meters

ELECTRICAL DATA & TRANSISTOR OUTPUTS
- Supply Operating Voltage: 10 ... 30 VDC
- Total Digital Channels: 1 Digital Output channel
- Transistor Output Configuration: Push-pull Transistor (Complementary pushing-pulling topology)
- Output Switching Configuration: Supports flexible runtime reversal between Light Switching mode (Output ON when beam is received) and Dark Switching mode (Output ON when beam is blocked/interrupted)
- System Switching Frequency: 1000 Hz (Processes 1000 discrete state transitions per second)
- Signal Response Time: 0.5 ms (Perfectly tuned for rapid item counting and micro-second tracking lines)

CONNECTION INTERFACE & CALIBRATION CONTROL
- Electrical Connection Type: M12/M8 Standard Quick Disconnect Plug (Male Connector)
- Connection Joint Hardware: Standard industrial M8 4-pin layout fitted with a heavy-duty bọc vỏ Metal threaded sleeve
- Sensitivity Calibration Interface: Integrated microelectronic Teach-In tactile push-button supporting automated object contrast evaluation and keypad security lock functions.

MECHANICAL PROPERTIES & MATERIAL COMPOSITION
- Physical Enclosure Style: Miniaturized rectangular block footprint (Cubic Form Factor - 3B Series)
- Physical Housing Dimensions (W × H × L): 11 mm × 32 mm × 17 mm
- Structural Housing Material: Heavy-duty engineering PC-ABS plastic alloy
- Optical Window Lens Material: High-transmission optical-grade PMMA plastic polymer
- Fixing Assembly Method: Rigid through-hole structural bolt mounting directly through the sensor casing

ENVIRONMENTAL RATINGS & SAFETY GUIDELINES
- Ingress Protection Rating: IP67 (Completely dust-tight and resilient against temporary fluid immersion during line washdowns)
- Ambient Operating Temperature Spectrum: -25°C to +55°C
- Ambient Storage Temperature Spectrum: -40°C to +70°C
- System Compliance & Safety Quality Standards: cULus certified, fully aligned with international IEC 60947-5-2 guidelines for industrial sensing devices.