Product Description

The Keyence FU-79U is a high-precision through-beam fiber optic sensor designed for detecting minute objects in industrial automation and quality control applications. With a beam emitting direction from the top and a compact fiber unit diameter of ø0.5 mm, it offers flexibility in installation and integration into various systems. The sensor boasts an impressive minimum detectable object size of just 0.005 mm, making it ideal for detecting fine particles or micro-components. Its robust construction ensures durability, withstanding ambient temperatures ranging from -40°C to +50°C, making it suitable for demanding industrial environments. The FU-79U is compatible with Keyence's FS-V10, FS-N, and FS-V20 series amplifiers, providing versatility in system integration.​

Technical Specifications

• Model: FU-79U
• Type: Through-beam fiber optic sensor
• Beam Emitting Direction: Top
• Fiber Unit Length: 1 meter (free-cut)
• Fiber Unit Diameter: ø0.5 mm
• Minimum Bend Radius: R2 mm
• Minimum Detectable Object: ø0.005 mm (opaque material)
• Tightening Torque: 0.6 N·m
• Environmental Resistance:
• Ambient Temperature: -40°C to +50°C (no freezing)
• Relative Humidity: 35% to 85% RH (no condensation)
• Material:
• Core Fiber: Acrylic
• Fiber Sheath: Nylon
• Case: SUS303
• Accessories Included: Fiber cutter, FU adapter, mounting screws
• Weight: Approximately 4 g​