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Christmas/New Year Delay Notice: Many suppliers are closed 22 Dec – 15 Jan. Some orders may experience delays.
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Fiber Optic Cable Sensor LL3-DK21 | Threaded Sleeve Design | 260 mm Sensing Range | Stainless Steel Head | by SICK

BRAND: SICK
SKU: 5313023
$229.70 List price: $288.70
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The LL3-DK21 fiber optic cable sensor is designed for standard proximity sensing applications, featuring a maximum sensing range of 260 mm and a threaded sleeve design for easy installation. Built for industrial environments, this sensor offers durability with its stainless steel head and operates effectively in temperatures ranging from -40 °C to +70 °C, ensuring reliable performance in various conditions.
Technical Specifications
  • Device type: Fiber-optic cables
  • Functional principle: Proximity system
  • Fiber-optic head design: Threaded sleeve
  • Compatible fiber-optic amplifiers: WLL80, WLL180, GLL170(T)
  • Sensing range max.: 260 mm (WLL80 at 8 ms)
  • Minimal object diameter: 0.013 mm
  • Angle of dispersion: 60°
  • Integrated lens: No
  • Compatibility tip adapters: Yes
  • Compatibility with infrared light: No
  • Optical fiber cable can be shortened: Yes
  • Adapter end sleeves required: No
  • Optical fiber head material: Stainless steel
  • Light emission: Axial
  • Thread diameter (housing): M3
  • Fiber length: 500 mm
  • Bending radius: 15 mm
  • Dynamic flexibility (robotics): No
  • Outside diameter, optical fiber cable connection: 1.3 mm
  • Fiber arrangement: Coaxial
  • Core structure: S: Ø 0.25 mm, R: 10 x Ø 0.125 mm
  • Sheath material: Polyethylene (PE)
  • Fibers material: Polymethylmethacrylate (PMMA)
  • Ambient operating temperature: -40 °C to +70 °C
  • Dimensions (H x L x W): 3mm x 500mm x 3mm
  • Weight: 0.1 kg
Key Features
  • Fiber-optic cable with threaded sleeve design
  • Maximum sensing range of 260 mm with WLL80 at 8 ms
  • Minimal object diameter detection of 0.013 mm
  • Angle of dispersion 60°
  • No integrated lens, compatible with tip adapters
  • Optical fiber cable can be shortened without adapter end sleeves
  • Stainless steel optical fiber head with axial light emission
  • Coaxial fiber arrangement with polymethylmethacrylate (PMMA) fibers
  • Polyethylene (PE) sheath for durability
  • Operating temperature range from -40 °C to +70 °C
Professional Installation Requirements
  • Installation should be performed by qualified personnel familiar with fiber-optic sensor systems to ensure proper setup and safety.
Applications
  • Standard proximity sensing applications
  • Compatible with fiber-optic amplifiers WLL80, WLL180, GLL170(T)
Standards & Compliance
  • AS/NZS 3000 – Wiring Rules (Electrical Installation)
Environmental Benefits
  • Durable materials reduce waste and replacement frequency
  • Low power consumption when used with compatible amplifiers
Warranty Information

Standard manufacturer warranty applies; please refer to SICK for details.

Available Now

The SICK LL3-DK21 fiber-optic cable is available for immediate purchase, ideal for standard proximity sensing applications in industrial environments.