{"id":4528,"date":"2026-01-21T13:57:12","date_gmt":"2026-01-21T05:57:12","guid":{"rendered":"https:\/\/atfits.com\/?post_type=product&p=4528"},"modified":"2026-01-21T13:57:12","modified_gmt":"2026-01-21T05:57:12","slug":"keyence-fu-31-fiber-optic-sensor-automation-industry","status":"publish","type":"product","link":"https:\/\/atfits.com\/es\/producto\/keyence-fu-31-fiber-optic-sensor-automation-industry\/","title":{"rendered":"Keyence FU-31 Fiber Optic Sensor Automation Industry"},"content":{"rendered":"

Keyence FU-31 Fiber Optic Sensor<\/h1>\n
<\/div>\n

Product Overview<\/h2>\n
<\/div>\n
The Keyence FU-31 is a high-precision side-emitting reflective fiber optic sensor unit, specifically designed for seamless integration with Keyence fiber optic amplifiers (e.g., FS-V31P, FS-N41P) in industrial automation applications. It is engineered to address space-constrained detection tasks, such as micro-component inspection in electronics manufacturing, small-part presence verification in automotive assembly, and fine feature detection in semiconductor processing. Featuring a dual-core fiber structure and side-emitting beam design, the FU-31 can access narrow gaps and tight mechanical layouts that are inaccessible to conventional straight-emitting sensors. With a 2-meter free-cut fiber cable and a minimum bend radius of R10 mm, it offers flexible installation customization to match diverse on-site requirements. Its robust construction enables stable operation across a wide temperature range, making it a reliable solution for enhancing detection accuracy and flexibility in high-precision automated production lines.<\/div>\n
<\/div>\n
\n
<\/div>\n

Main Functions<\/h2>\n
<\/div>\n
    \n
  1. Micro-Object High-Precision Detection<\/strong>\n
    <\/div>\n

    Under optimal conditions, the sensor can detect ultra-small objects as fine as a 0.005 mm diameter gold wire, making it ideal for inspecting delicate components like semiconductor leads, electronic chip bonding wires, and micro-mechanical parts. It supports reliable presence\/absence checks and position verification of tiny targets in tight spaces.<\/li>\n

  2. Space-Saving Side-Emitting Detection<\/strong>\n
    <\/div>\n

    The side-emitting beam direction eliminates the need for direct line-of-sight installation, allowing the sensor to be mounted in narrow gaps, around machine fixtures, or on the side of compact equipment. This function is critical for applications where traditional top-emitting sensors cannot fit due to mechanical constraints.<\/li>\n

  3. Flexible Installation and Cable Customization<\/strong>\n
    <\/div>\n

    The 2-meter fiber cable is free-cut, enabling users to trim it to the exact length required for their setup, reducing cable clutter and optimizing sensor layout. The dual-core fiber (\u00f81.0 mm \u00d7 2) ensures efficient light transmission, while the R10 mm minimum bend radius provides greater installation flexibility compared to standard fiber sensors.<\/li>\n

  4. Harsh Environment Adaptability<\/strong>\n
    <\/div>\n

    It operates stably within a temperature range of -40\u00b0C to +70\u00b0C, suitable for high-temperature manufacturing processes, cold storage inspection lines, and outdoor industrial applications. The durable polymer cable jacket and stainless steel sleeve resist mechanical wear, vibration, and minor chemical exposure, ensuring long-term reliability.<\/li>\n

  5. Seamless Amplifier Compatibility and System Integration<\/strong>\n
    <\/div>\n

    When paired with Keyence fiber optic amplifiers, it converts light-intensity variations into digital signals that can be easily integrated with PLCs, HMIs, and other industrial control systems. It also supports mutual interference suppression when multiple sensors are deployed in close proximity, maintaining signal integrity in high-density detection setups.<\/li>\n<\/ol>\n

    <\/div>\n
    \n
    <\/div>\n

    Technical Features<\/h2>\n
    <\/div>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Feature<\/th>\nDetails<\/th>\n<\/tr>\n<\/thead>\n
    Sensor Type<\/td>\nSide-emitting reflective fiber optic sensor unit<\/td>\n<\/tr>\n
    Beam Direction<\/td>\nSide-emitting<\/td>\n<\/tr>\n
    Fiber Configuration<\/td>\nDual-core (transmission + reception), \u00f81.0 mm diameter \u00d7 2<\/td>\n<\/tr>\n
    Fiber Cable Length<\/td>\n2 m (free-cut to custom length)<\/td>\n<\/tr>\n
    Minimum Bend Radius<\/td>\nR10 mm (prevents signal degradation during installation)<\/td>\n<\/tr>\n
    Minimum Detectable Object<\/td>\n0.005 mm diameter gold wire (under optimal detection parameters)<\/td>\n<\/tr>\n
    Operating Temperature Range<\/td>\n-40\u00b0C to +70\u00b0C (no condensation)<\/td>\n<\/tr>\n
    Storage Temperature Range<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
    Housing Material<\/td>\nStainless steel (sleeve section); durable polymer (cable jacket)<\/td>\n<\/tr>\n
    Light Source Compatibility<\/td>\nOptimized for red LED light sources (640 nm wavelength, matching Keyence amplifiers)<\/td>\n<\/tr>\n
    Mechanical Durability<\/td>\nResistant to vibration, shock, and minor chemical exposure<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    <\/div>\n
    \n
    <\/div>\n

    Product Dimensions and Weight<\/h2>\n
    <\/div>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Item<\/th>\nDetails<\/th>\n<\/tr>\n<\/thead>\n
    Fiber Cable Diameter<\/td>\n\u00f81.0 mm \u00d7 2 (dual-core parallel structure)<\/td>\n<\/tr>\n
    Fiber Cable Length<\/td>\n2 m (free-cut)<\/td>\n<\/tr>\n
    Sleeve Dimensions<\/td>\nCompact stainless steel sleeve, designed for side-mounting in narrow spaces<\/td>\n<\/tr>\n
    Weight<\/td>\nApproximately 5 g (including sensor head and 2 m cable)<\/td>\n<\/tr>\n
    Mounting Method<\/td>\nSleeve-type mounting, compatible with standard industrial brackets and fixtures for side-position installation<\/td>\n<\/tr>\n
    Cable Connector<\/td>\nPre-terminated connector for direct, secure connection to Keyence fiber optic amplifiers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n