Empowering Intelligent Industrial Sensing: Application of OFSCN® 85℃ SST Seamless Stainless Steel Tube Optical Fiber Cables in Distributed Sensing

Under the wave of Industry 4.0 and smart industrial development, real-time perception of production environments, equipment status, and infrastructure has become a core competency for enterprises. However, among various sensing technologies, how can one achieve dead-zone-free, high-precision monitoring in kilometers-long utility tunnels, complex factory floors, or damp underground environments?

The 85℃ SST Seamless Stainless Steel Tube Optical Fiber Cable (FIMT), developed by Beijing Dacheng Yongsheng Technology Co., Ltd. (OFSCN®), has become the ideal carrier in the field of Distributed Fiber Optic Sensing (DFOS) due to its excellent structural design and material properties. It serves as a pair of "never-closing eyes" for industrial safety.

1. Distributed Sensing: A Leap from "Point" Monitoring to "Line" Perception

Traditional sensors (such as thermocouples or pressure transmitters) are typically "point-based," monitoring local data only at the installation site. In contrast, distributed sensing technology, paired with the OFSCN® 85℃ SST Cable, transforms the entire length of the optical fiber into thousands of sensing units.

Its core characteristics include:

1. Full Coverage, No Blind Spots: Wherever the cable is laid, the monitoring points follow. Every 1 meter (or even less) provides a real physical parameter, completely solving the drawback of traditional point sensors missing hidden dangers.
2. Long Distance and Low Loss: With just one interrogator unit (DTS/DAS/DSS), real-time monitoring of temperature, vibration, or strain can be achieved over several kilometers or even dozens of kilometers.
3. Multi-Dimensional Perception:
   • Distributed Temperature Sensing (DTS): Monitors heat changes to prevent fires.
   • Distributed Acoustic Sensing (DAS): Listens for destructive behavior or mechanical failures.
   • Distributed Strain Sensing (DSS): Monitors structural deformation and settlement.

2. Why is the 85℃ SST Cable the "Golden Choice" for Sensing?

In distributed sensing, the optical cable is not just a transmission medium; it is the sensor itself. The single-layer seamless stainless steel tube encapsulation used by OFSCN® offers significant advantages in sensing performance:

A. Superior Thermal and Strain Transfer

Unlike bulky traditional armored cables, the SST seamless tube cable features an ultra-fine outer diameter (typically 2.0mm or 3.0mm) and thin wall thickness. The excellent thermal conductivity of stainless steel ensures that external environmental temperatures are rapidly and accurately transferred to the internal fiber. Additionally, because the stainless steel tube and the fiber can achieve high coupling through specialized gels or tight friction, minute structural deformations can be reflected in the optical signal in real-time.

B. 100% Airtightness Protecting the SiO2 Core

Moisture and corrosive gases in industrial environments are the enemies of optical fiber lifespan. The SST seamless tube structure achieves a physical full-seal, strictly preventing the penetration of H2O (water vapor) or hydrogen molecules. This not only prevents chemical aging of the fiber but also avoids light attenuation caused by hydrogen darkening, ensuring the sensing system operates long-term in industrial temperatures from -40℃ to 85℃ without data drift.

C. Rugged Industrial Protection

The stainless steel material grants the cable extreme resistance to lateral pressure and rodent bites. When laid in utility tunnels, tunnels, or on factory floors, the SST cable resists bumps and heavy pressure during daily construction without needing extra protective conduits, significantly reducing system construction and maintenance costs.

3. Typical Application Practices

• Fire Warning in Utility Tunnels: In urban underground tunnels, the 85℃ SST cable is laid along the route. If a cable joint overheats or a local fire occurs, the DTS system can accurately locate the heating position to the meter level within seconds.
• Security for Long-Distance Pipelines: Utilizing the vibration-sensing characteristics of the SST cable (DAS technology), it can perceive illegal excavation or mechanical construction around pipelines, providing an all-weather "electronic fence" for energy arteries.
• Structural Health Monitoring for Bridges and Tunnels: By embedding micro-fine SST cables into concrete or attaching them to structural surfaces, real-time strain changes can be perceived, providing health scores for infrastructure.
• Equipment Monitoring in Smart Factories: Laying SST cables near large transformers, reactors, or conveyor belts allows for real-time monitoring of temperature anomalies, enabling preventive maintenance.

4. Professional Assurance: Beijing Dacheng Yongsheng (OFSCN®)

As an expert in the field of specialty optical fiber sensing, Beijing Dacheng Yongsheng Technology Co., Ltd. provides not only high-performance 85℃ SST seamless stainless steel tube cables but also in-depth technical support for our clients.

Our products undergo rigorous laboratory validation to ensure excellent mechanical stability and signal consistency under industrial conditions of 85℃. Whether in the damp tunnels of the south or the dry mines of the north, OFSCN® provides you with the most reliable "intelligent sensing nerves."

For more distributed sensing solutions, please contact us:

Official Website: https://www.ofscn.org Product Details: 85℃ SST Seamless Stainless Steel Tube Optical Fiber Cable

Beijing Dacheng Yongsheng Technology Co., Ltd. — Ultimate Protection, Precise Perception