Guardian of Long-Distance Industrial Monitoring: OFSCN® 300°C SST High-Temperature Optical Cable

In application scenarios such as long-distance oil and gas pipelines, deep-earth exploration, and ultra-long power tunnels, monitoring distances are often measured in kilometers. Traditional electronic sensors face severe signal attenuation, complex wiring maintenance, and false alarms caused by electromagnetic interference when transmitting over long distances.

The OFSCN® 300°C SST seamless stainless steel tube high-temperature optical cable, launched by Beijing Dacheng Yongsheng Technology Co., Ltd., thoroughly solves the pain points of monitoring under extreme long-distance conditions thanks to its distributed sensing characteristics and superior physical strength.

1. Distributed Perception: A "Neural Network" That Eliminates Blind Spots

Traditional monitoring relies on point-based deployment, where sensors are installed at intervals, often leaving the spaces in between as safety blind spots. By pairing the 300°C SST optical cable with Distributed Fiber Optic Sensing (DFOS) technology, the entire cable is transformed into tens of thousands of continuous sampling points.

• Full-Line Coverage: A single fiber is a string of sensors. In harsh 300°C environments, it provides real-time feedback on temperature (DTS) or vibration (DAS) changes for every centimeter across several kilometers.
• Centimeter-Level Localization: When a minor leak or external intrusion occurs on a pipeline kilometers away, the system instantly captures the anomaly and provides precise positioning with an error margin of only centimeters.

2. Hardcore Core Strength: The Foundation of Long-Distance Stability

Stable operation over several kilometers at temperatures up to 300°C for many years places extreme demands on manufacturing processes:

• Seamless Laser Welding Process: We utilize 316L seamless stainless steel tubes with longitudinal welding encapsulation. This FIMT (Fiber-in-Metal-Tube) structure achieves 100% hermeticity. It can withstand lateral pressures exceeding 100 MPa and, crucially, provides a perfect hydrogen shield at high temperatures, protecting the internal silica (SiO2) fiber from darkening and signal distortion caused by hydrogen aging.
• High Tensile Strength: Designed for long-distance laying and downhole suspension, the 3.0 mm specification cable has a tensile strength exceeding 1200 N. This ensures that the internal fiber remains in a zero-stress state while bearing its own weight or installation tension, guaranteeing long-term signal reliability.
• Low-Loss Signal Transmission: The specialized Polyimide (PI) coating is only 15 microns thick. Combined with the high rigidity of the stainless steel tube, it ensures that vibration signals are transmitted to the fiber core with maximum speed and minimal loss.

3. Real-World Scenarios: Guarding Industrial "Lifelines"

This optical cable is actively deployed in critical infrastructure worldwide:

• Smart Oil and Gas Wells: In wells thousands of meters deep, it monitors temperature and acoustic profiles across the entire depth in real-time to optimize production efficiency.
• Long-Distance Heat/Oil/Gas Pipelines: Provides 24-hour continuous detection of tiny leaks and illegal third-party excavation to prevent environmental disasters.
• Power Tunnel Safety: In high-voltage cable dense areas, it accurately identifies localized hot spots to prevent the spread of fire accidents.

Contact us to secure your industrial lifelines:

• Company Name: Beijing Dacheng Yongsheng Technology Co., Ltd.
• Official Website: https://www.ofscn.org
• Product Details: https://www.ofscn.org/dofs/300-c-sst-optical-cable.html