Keyence FU-31 Fiber Optic Sensor Automation Industry
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Keyence FU-31 Fiber Optic Sensor
Product Overview
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.
Main Functions
- Micro-Object High-Precision Detection
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.
- Space-Saving Side-Emitting Detection
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.
- Flexible Installation and Cable Customization
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 (ø1.0 mm × 2) ensures efficient light transmission, while the R10 mm minimum bend radius provides greater installation flexibility compared to standard fiber sensors.
- Harsh Environment Adaptability
It operates stably within a temperature range of -40°C to +70°C, 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.
- Seamless Amplifier Compatibility and System Integration
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.
Technical Features
| Feature | Details |
|---|---|
| Sensor Type | Side-emitting reflective fiber optic sensor unit |
| Beam Direction | Side-emitting |
| Fiber Configuration | Dual-core (transmission + reception), ø1.0 mm diameter × 2 |
| Fiber Cable Length | 2 m (free-cut to custom length) |
| Minimum Bend Radius | R10 mm (prevents signal degradation during installation) |
| Minimum Detectable Object | 0.005 mm diameter gold wire (under optimal detection parameters) |
| Operating Temperature Range | -40°C to +70°C (no condensation) |
| Storage Temperature Range | -40°C to +85°C |
| Housing Material | Stainless steel (sleeve section); durable polymer (cable jacket) |
| Light Source Compatibility | Optimized for red LED light sources (640 nm wavelength, matching Keyence amplifiers) |
| Mechanical Durability | Resistant to vibration, shock, and minor chemical exposure |
Product Dimensions and Weight
| Item | Details |
|---|---|
| Fiber Cable Diameter | ø1.0 mm × 2 (dual-core parallel structure) |
| Fiber Cable Length | 2 m (free-cut) |
| Sleeve Dimensions | Compact stainless steel sleeve, designed for side-mounting in narrow spaces |
| Weight | Approximately 5 g (including sensor head and 2 m cable) |
| Mounting Method | Sleeve-type mounting, compatible with standard industrial brackets and fixtures for side-position installation |
| Cable Connector | Pre-terminated connector for direct, secure connection to Keyence fiber optic amplifiers |
WHO WE ARE
About us
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
Where is your company located?
We are located next to Shanghai, the largest city in China, and Kunshan, the first economic county in China. With convenient transportation and developed logistics, it provides a good geographical advantage for our electronic components sales business.
What types of electronic components does your company mainly sell?
We are committed to providing many types and brands of electronic components, including but not limited to Sensors, Switches & Relays, Connectors, Circuit Protectio, Power Supplier & Cable, etc. We have established relationships with many well-known electronic component manufacturers. We have established long-term and stable relationships with many well-known electronic component manufacturers to ensure that the products we sell are of reliable quality and reasonable price.
What are the prices of your products?
Our product prices vary according to market conditions and product models. We are committed to providing high quality electronic components at fair and reasonable prices, and offer our customers a variety of incentives and flexible purchasing methods.
How to purchase your electronic components?
You can contact our customer service staff directly by phone, whatsapp, email, our official website. We support a variety of payment methods, and provide you with fast and safe logistics and distribution services.
How do you guarantee the quality of your products?
We attach great importance to product quality, all the electronic components we sell come from regular channels and undergo strict quality testing. We promise to provide customers with high-quality electronic components, and provide perfect after-sales service to ensure that customers have no worries in the process of use.
If I am not satisfied with the electronic components I purchased, can I return them?
We provide perfect after-sales service, if you are not satisfied with the purchased electronic components, you can return or exchange them within the specified time. Please refer to our official website or consult our customer service staff for the specific return policy and process.
Can your company provide technical support and solutions?
We have a professional technical team that can provide technical support and solutions for our customers. Whether you encounter any problems in choosing or using the products, we will be happy to answer your questions and provide professional technical support.
How to contact your customer service?
You can contact our customer service personnel through the online customer service system on our official website, telephone, e-mail or social media platforms. Our customer service staff will provide you with professional services and answer any questions you may have.
Does your company often organize promotional activities?
In order to give back to our customers, we will organize various promotions from time to time, including discounts, full reductions, giveaways and so on. Please keep an eye on our official website or social media platforms to stay up-to-date with the latest promotions.
