In fields such as steel metallurgy, high-temperature chemical reactors, and aerospace engine testing, the temperature limit of monitoring is often the system's bottleneck. When operating temperatures approach or exceed 600°C, traditional electronic sensors and standard fiber optic packaging materials fail rapidly.
[Beijing Dacheng Yongsheng Technology Co., Ltd. (DCYS)] offers the OFSCN® 650°C Distributed Fiber Optic Temperature Sensor, a solution specifically designed for industrial extreme environments. Our core value is: Ensuring the optical signal maintains stable transmission and measurement accuracy at a sustained high temperature of 650°C.
I. Material Breakthrough: The Core Secret to 650°C Survival
The acrylate coating on standard optical fiber begins to degrade at 85°C. How does the OFSCN® sensor survive long-term at 650°C?
- Fiber Body: We use high-purity quartz optical fiber as the sensing core material, whose melting point far exceeds 650°C.
- Coating Optimization (Heat Resistance): The standard coating is replaced with a high-temperature metal coating (such as gold, copper, or a specialized high-temp alloy). This coating does not carbonize, outgas, or produce particles at high temperatures, fundamentally ensuring the fiber's mechanical strength and low optical attenuation in a high-temperature environment.
- Encapsulation Structure: The sensor is housed inside a capillary seamless steel tube. The steel tube material is a high-temperature alloy, and its casing not only withstands 650°C but also effectively isolates the fiber from corrosive gases and chemical vapors.
II. Engineering Challenge: How to Eliminate Thermal Stress on the Optical Signal?
In high-temperature environments, the difference in the coefficients of thermal expansion of various materials can induce stress on the fiber, leading to micro-bending loss and measurement errors. This is the most difficult engineering challenge in high-temperature sensing.
- Thermal Stress Isolation Design: The internal encapsulation of our capillary seamless steel tube is specially engineered to ensure the optical fiber remains in a stress-free or low-stress state. The fiber has enough buffer space inside the steel tube to accommodate dimensional changes caused by the steel tube's expansion at 650°C.
- Long-Term Attenuation Control: Through rigorous high-temperature aging tests, the OFSCN® sensor guarantees that the fiber's optical attenuation increase is minimal after thousands of hours of continuous operation at 650°C. This means the sensor's effective monitoring distance is not shortened, allowing for long-term system stability.
III. Value Proposition: Continuous, High-Precision Temperature Profile
By choosing the OFSCN® 650°C Distributed Sensor, you gain:
- Continuous Monitoring: Transforming a single optical fiber into a continuous, kilometer-long linear thermometer.
- Hotspot Localization: High spatial resolution enables you to precisely and in real-time locate hotspots and anomalies within high-temperature equipment.
- Intrinsic Safety: Pure fiber optic sensing is non-electrical, fundamentally eliminating the risk of electrical sparks and short circuits in a 650°C environment, making it the optimal choice for high-hazard industries like petrochemicals and oil & gas.
[Beijing Dacheng Yongsheng Technology Co., Ltd. (DCYS)], leveraging its deep experience in specialty fibers and high-temperature encapsulation, provides you with a reliable sensing solution proven to withstand thermal limits.
[Beijing Dacheng Yongsheng Technology Co., Ltd. (DCYS)]
Official Website: https://www.ofscn.org
Product Link: https://www.ofscn.org/dofs/temperature-sensor-650.html
Service Inquiry: Please contact us to customize a distributed temperature monitoring solution that meets your demanding industrial needs.