Equipping "Great Power Heavy Industry" with "Sensitive Nerves": Application of OFSCN® 200℃ SST Cables in Distributed Sensing.

In the field of major engineering—whether it be cross-sea bridges, ultra-long tunnels, deep-sea oil and gas wells, or ultra-high voltage power grids—the long-term safe operation of these "Great Power Heavy Industries" relies on real-time, precise structural health monitoring. However, in extreme environments, traditional sensors often become "deaf and blind" due to insufficient temperature resistance, low tensile strength, or vulnerability to electromagnetic interference.

The 200℃ SST Seamless Stainless Steel Tube Optical Fiber Cable, developed by Beijing Dacheng Yongsheng Technology Co., Ltd. (OFSCN®), is becoming an indispensable "sensitive nerve" for these major projects thanks to its unique metal encapsulation process, enabling dead-zone-free, all-weather structural perception.

1. From "Points" to "Lines": The Revolution of Distributed Sensing

Traditional sensors (such as thermocouples or strain gauges) can usually only monitor the status of a single point. For pipelines or large structural components that are kilometers long, this "point-by-point" approach easily misses critical hidden dangers.

Based on OFSCN® 200℃ SST cables, Distributed Sensing technologies (DTS/DSS/DAS) transform the entire length of the cable into thousands of "virtual sensors." By measuring the scattering signals of light as it travels through the fiber inside the stainless steel tube, it achieves:

• Full-Line Monitoring: Data for temperature or strain is obtained every 1 meter or even less.
• Long-Distance Transmission: A single cable can cover a monitoring range of dozens of kilometers.
• Intrinsic Safety: Optical fibers carry no electricity, making them safe for use in flammable and explosive chemical environments without the need for explosion-proof housings.

2. Why is 200℃ SST the "Golden Carrier" for Sensors?

Not all optical cables are fit for high-precision sensing tasks. The seamless stainless steel tube structure from OFSCN® offers inherent advantages:

A. Superior Heat and Strain Coupling

Stainless steel possesses excellent thermal conductivity. When the external environment undergoes slight temperature fluctuations, heat is rapidly conducted through the seamless metal tube wall to the internal fiber. Simultaneously, the high modulus of the stainless steel tube perfectly captures minute structural strains and transmits them to the fiber, ensuring real-time and high-precision monitoring data.

B. Guaranteed 200℃ Long-Term Temperature Resistance

In many industrial sensing scenarios (such as thermal oil recovery, power cable joints, or chemical reactors), temperatures often fluctuate between 100℃ and 200℃. OFSCN® utilizes high-temperature Polyimide-coated fibers paired with a specialized stainless steel encapsulation process, ensuring that the sensor does not suffer from performance degradation or signal drift even at a constant 200℃.

C. Minimal "Intrusiveness"

Thanks to micro-fine stainless steel tube technology, the outer diameter of the cable can be as small as approximately 1.0mm. This means it can be easily embedded into carbon fiber composites, concrete structures, or narrow mechanical gaps without damaging the integrity of the host structure, achieving true "non-destructive monitoring."

3. Application Practices: Empowering Diverse Fields

• Dam and Bridge Health Monitoring: By embedding SST cables inside concrete, engineers can perceive hydration heat changes and overall strain in real-time to prevent cracks.
• Fire Warning in Power Cable Tunnels: Laying SST cables along power lines allows DTS technology to monitor cable surface temperatures in real-time, accurately locating hotspots to prevent fires before they start.
• Geothermal and Oil/Gas Extraction: At depths where temperatures reach 200℃, the SST cable resists high pressure and acidic fluid erosion, returning accurate geothermal temperature profiles.

4. Professional Choice for Worry-Free Data

As a leader in optical fiber sensing for extreme environments, Beijing Dacheng Yongsheng Technology Co., Ltd. is committed to providing high-quality SST sensing cables to global clients.

We understand that for major national infrastructure, any false alarm or missed report can lead to immeasurable losses. Therefore, our 200℃ SST cables undergo rigorous pressure, temperature, and tensile testing before leaving the factory, ensuring that every meter of cable becomes the most reliable "neuron" under extreme conditions.

For more distributed sensing solutions, please contact us: Official Website: https://www.ofscn.org Product Page: 200℃ SST Seamless Stainless Steel Tube Optical Fiber Cable

Beijing Dacheng Yongsheng Technology Co., Ltd. — Empowering Intelligent Perception, Safeguarding Engineering Safety.