SICK WL11G-2B2531 Retro-Reflective Sensor (1041390)

WL11G2B2531 – The SICK WL11G-2B2531 is a robust retro-reflective photoelectric sensor engineered for high-precision transparent object detection. Featuring autocollimation optics, a visible red LED, and up to 4 m sensing range, it delivers superior detection of glass, PET bottles, foils, and clear packaging. With dual output (PNP/NPN) and IP69K rating, it thrives in harsh industrial conditions.

Technical Specifications

• Model: WL11G-2B2531
• Part Number: 1041390
• Sensor Type: Retro-reflective photoelectric
• Detection Type: Transparent object detection
• Operating Principle: Autocollimation (coaxial optics)
• Sensing Range (typical/max): 0–4 m (with reflector)
• Minimum Distance (no reflector): Defined by autocollimation setup
• Light Source: Visible red LED (640 nm)
• Focus Angle: ~1.5°
• Light Spot Size: Ø 25 mm at 1.5 m
• Adjustment: 11-turn potentiometer
• Switching Outputs: PNP & NPN (selectable)
• Output Current: ≤ 100 mA
• Signal Voltage PNP: HIGH = UV – 3 V / LOW ≈ 0 V
• Signal Voltage NPN: HIGH ≈ UV / LOW < 3 V
• Response Time: ≤ 330 µs
• Switching Frequency: 1,500 Hz
• Light/Dark Switching: Selectable via control cable
• Polarization Filter: Included

• Supply Voltage: 10–30 V DC
• Ripple: < 5 Vpp
• Current Consumption: 30 mA
• Connection Type: M12, 5-pin male connector
• Protection Class: III
• Circuit Protection:
  • Reverse polarity (A)
  • Overcurrent/short-circuit protection (C)
  • Transient protection (D)
• Enclosure Rating: IP66 / IP67 / IP69K
• Weight: 120 g
• Housing Material: ABS
• Optics Material: PMMA
• Operating Temp: –30 °C to +60 °C
• Storage Temp: –40 °C to +75 °C

Function & Application

Purpose:
The WL11G-2B2531 SICK is purpose-built for reliable detection of transparent or shiny objects, using autocollimation optics to reduce background interference and eliminate blind zones. With its high precision and rugged design, it’s an ideal sensor for demanding packaging, beverage, and pharma environments.

Typical Applications:

• PET and glass bottle detection
• Transparent film or foil sensing
• Clear packaging and blister pack monitoring
• Conveyor object counting
• Filling and sealing machine integration

Compliance & Classification

• CE Marked: Yes
• ECOLAB Certified: Yes
• UL File No.: NRKH.E181493 & NRKH7.E181493
• SICK SIRIC Technology: Integrated
• RoHS Compliant: Yes
• WEEE Obligations: Yes
• Commodity Code: 90318080
• Lifecycle Status: Active product
• Country of Origin: Germany

Key Features & Benefits:

✅ 4 m Sensing Range with retro-reflector.

✅ Autocollimation Optics – perfect for transparent materials.

✅ Dual PNP/NPN Output – flexible integration.

✅ Ultra Fast 330 µs Response – for high-speed lines.

✅ Hygienic & Rugged – IP69K-rated for washdowns.

📦 Ships Fast Across the UK & EU

Available now from Drive Outlet Megastore, we offer the most competitive WL11G-2B2531 prices, backed by expert tech support and fast shipping.

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