LEUZE FT318B.3/2N M18 ENERGETIC DIFFUSE PHOTOELECTRIC SENSOR (PART NUMBER: 50122557)

DEEP PRODUCT OVERVIEW & SYSTEM FOOTPRINT
The Leuze FT318B.3/2N (Order Part Number: 50122557) is a high-grade industrial energetic diffuse reflection photoelectric sensor belonging to the cutting-edge 318B Series generation engineered by the global automation pioneer Leuze electronic (Germany). Designed with a standard metric M18 cylindrical threaded barrel envelope, this advanced device encapsulates both the light-emitting diode transmitter and the light-receiving microelectronic circuit inside a single structural housing shell. Operating on a standalone reflection loop based on light returning directly from the object's surface, the sensor completely eliminates the field requirement for separate external mirrors, retro-reflective reflectors, or dedicated receiver units on the opposite side. This minimalist layout configuration maximizes mechanical gá lắp flexibility, slashes field installation costs, and streamlines system implementation. The FT318B.3/2N stands as a highly versatile and cost-effective automation solution for high-volume automated conveyor systems, product tracking, rapid item counting, component profiling, and package orientation validation inside filling machinery, pneumatic sorting chutes, and precision machining tools.

ENERGETIC DIFFUSE PRINCIPLE & REMISSION-DRIVEN PROFILING
The sensor executes its inspection routines strictly based on the energetic diffuse reflection principle. The internal transmitter module continuously emits a visible red LED light beam modulated at a wavelength of 620 nm in a high-frequency pulsed pattern (Pulsed Light) into the active scanning field.
- When the path is unobstructed, the light beam scatters freely into the surrounding atmosphere.
- The precise millisecond any target object enters the scanning field, its surface acts as a reflection medium, bouncing a specific portion of the light energy straight back toward the optical receiver lens window array. The integrated microelectronic board continuously gauges this returned light amplitude; once the energy crosses the pre-calibrated safety threshold, the transistor circuit switches its electrical output state to transmit a reliable digital control signal to the master PLC input module.
Because the underlying tracking loop relies entirely on the target's surface remission coefficient, the active scanning range adapts dynamically across various color profiles: it secures a guaranteed operational distance spanning from 1 mm up to 215 mm against standard high-reflectivity white targets (90% remission) and achieves a maximum typical sensing range limit of 280 mm. The measurement threshold tapers down deterministically against dark-colored substrates (such as matte grey or light-absorbing black products), allowing controls technicians to calculate precise distance filtering for diverse packaging variants on the processing track.

SMART ELECTRONIC TEACH-IN INTERFACE & VISIBLE RED LIGHT PROFILE
- Intelligent Electronic Teach-In tactile button (Indicated by the ".3" suffix suffix): Moving far away from baseline mechanical rotary potentiometers that are notorious for trapping dust particles, suffering from fluid moisture ingress, or shifting out of calibration due to continuous heavy machine vibrations. 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 within seconds. This electronic mechanism slashes downtime during product changeovers on agile manufacturing lines and incorporates a keypad lock function to prevent unauthorized parameter adjustments by non-specialized personnel.
- High-Intensity Visible Red LED Light Source: Projects a razor-sharp, highly concentrated light spot directly onto the target surface. This high-visibility beam allows maintenance technicians to visually check and adjust focal target alignment instantly with the naked eye on-site, vastly reducing physical setup times. The pulsed light technology guarantees excellent immunity against heavy ambient lighting or stray industrial shop floor illumination noise.

RAPID INDUSTRIAL SWITCHING FREQUENCY & DUAL TRANSISTOR NPN OUTPUTS
- Blazing-Fast 500 Hz Switching Performance: The internal micro-processor handles up to 500 discrete signal state transitions every single second, yielding an ultra-short response time of only 1 ms. This rapid frequency response enables the device to seamlessly capture high-velocity item movements on express conveyor belts, run continuous unit counts on packaging tracks, track positions inside rapid automatic filling machine arrays, and drive responsive pneumatic sorting gate gates without trailing edge errors.
- Dual Independent Transistor NPN Channels (Suffix "2N"): Operating on a wide 10-30 VDC supply voltage rail, the sensor simultaneously outputs two discrete NPN logic channels. Output 1 handles Light Switching mode (Light ON - circuit loop closes when target reflection is registered), and Output 2 drives Dark Switching mode (Dark ON - circuit loop closes when light path remains clear/unobstructed). This sinking configuration transfers clean digital states straight into Asian standard PLC input cards (such as Mitsubishi, Omron, Keyence hardware) or microprocessor systems without additional external signal inversion blocks.

STANDARD M18 CYLINDRICAL HARDWARE & EXTENDED TEMPERATURE RESISTANCE
- Standard Metric M18 Threaded Barrel Footprint (M18 × 1 mm): Molded from high-grade ABS engineering plastic polymer alloy, the housing exhibits outstanding physical shock absorption, resistance to structural cracking under high tightening torque, and complete immunity against machine frame vibrations. Sporting a minimalist total casing length of 46 mm and a fully threaded M18 body, the hardware serves as a seamless drop-in installation tool: technicians can pass the barrel straight through standard bracket gá gá mounting ports and secure it tightly with the dual structural locking nuts within seconds. The unit comes standard with a factory-molded 2-meter high-flexibility cable housing 4 high-conductivity wire cores (0.2 mm² cross-section), maximizing tensile endurance and keeping the internal electronics perfectly sealed.
- Heavy-Duty IP67 Ingress Protection Seal: Completely dust-tight and fully shielded against fluid ingress under routine line sanitation washdowns or temporary water submersion. Combined with an extended operational thermal tolerance stretching from deep freezing settings at -40°C up to high-ambient conditions of +60°C, the Leuze FT318B.3/2N runs flawlessly across extreme operational nodes, including industrial cold storage networks, food processing lines, electronic component manufacturing clean rooms, and automated logistics distribution facilities.

OPTICAL DATA & TRACKING CAPACITY
- Operating Principle: Energetic Diffuse Reflection Sensor
- Product Series Alignment: 318B Series Lineup
- Light Emitting Source: LED, visible red beam profile
- Optical Light Wavelength: 620 nm
- Optical Modulator Pattern: Pulsed Light (Ensures superior ambient lighting noise suppression)
- Guaranteed Operating Range (Operating range): 1 mm to 215 mm (Evaluated with standard high-reflectivity white target with 90% remission)
- Maximum Typical Sensing Range Limit (Sensing range limit): Up to 280 mm
* Note: The active tracking threshold decreases linearly when detecting darker surfaces (grey, black targets) based on material surface remission parameters.

ELECTRICAL SPECIFICATIONS & SIGNAL OUTPUT
- Supply Operating Voltage (Supply Voltage UB): 10 ... 30 V DC (Includes integrated reverse polarity power rail protection)
- Open-Circuit Current Consumption: Optimized at micro-amp scales under standard DC regulations
- Total Digital Channels: 2 Independent Digital Output channels
- Transistor Output Configuration: NPN Configuration (Sinking type)
- Digital Output Switching Mode Logic (Complementary outputs):
  + Output Channel 1 (Light switching - Light ON): Closes circuit loop when full light reflection from an object's surface is received (Object present)
  + Output Channel 2 (Dark switching - Dark ON): Closes circuit loop when light path is unobstructed/clear (No object / Free space)
- System Switching Frequency: 500 Hz (Processes up to 500 state transitions per second)
- Signal Response Time: 1 ms (Ultra-responsive tracking engineered for rapid item counting lines)
- Initialization Startup Delay (Delay before availability): 300 ms

CONNECTION INTERFACE & FIELD CALIBRATION
- Electrical Connection Type: Pre-molded factory-sealed cable (Eliminates rear plug clearance footprints)
- Total Cable Length: 2 meters standard length
- Cable Core Configuration: 4-wire core layout, 0.2 mm² conductor cross-section with high tensile endurance
- Standard Wiring Interconnect Layout:
  + Brown Lead: Positive Voltage Input Rail (+10 ... 30 V DC)
  + Blue Lead: Negative Voltage Input Rail (0V / GND)
  + Black Lead: Output Channel 1 Digital Logic Output (NPN Light ON)
  + White Lead: Output Channel 2 Digital Logic Output (NPN Dark ON)
- Calibration Control Interface: Integrated microelectronic Teach-In tactile push-button supporting automated threshold calibration and keypad security lock functions.

MECHANICAL PROPERTIES & MATERIAL COMPOSITION
- Physical Enclosure Style: Cylindrical threaded barrel body (Cylindrical M18)
- Metric Thread Specification: M18 × 1 mm (18 mm outer diameter × 46 mm total housing length)
- Structural Housing Material: Heavy-duty industrial grade ABS engineering plastic polymer
- Optical Window Lens Material: High-transmittance technical grade Plastic polymer
- Fixing Assembly Method: Passed straight through gá đặt fixing brackets and rigidly secured via dual structural locking nuts.

ENVIRONMENTAL RATINGS & COMPLIANCE
- Ingress Protection Rating: IP67 (Completely dust-tight and resilient against temporary fluid immersion)
- Ambient Operating Temperature Spectrum: -40°C to +60°C
- Integrated Electronic Protections: Reverse polarity protection, output short-circuit protection
- Compliance Certifications: cULus certified, fully aligned under rigid global international IEC 60947-5-2 guidelines for industrial sensing equipment.