
Optical Fiber Sensors for High-Temperature Monitoring: A Review
High-temperature measurements above 1000 °C are critical in harsh environments such as aerospace, metallurgy, fossil fuel, and
PTSenR™ provides Distributed Temperature Sensing (DTS) systems capable of continuous temperature monitoring along fiber optic cables up to 10 km. These systems are designed for critical infrastructure such as pipelines and power cables, offering 1°C measurement accuracy, 0.1°C resolution, and pinpoint anomaly detection with 1 m precision. They support multiple channels (4, 8, or 16) and versatile communication interfaces (RS485, RS232, RJ45), operating in ambient temperatures from -10°C to +50°C and measuring from -40°C to +120°C. PTSenR™ systems are widely used in industrial applications requiring real-time monitoring and rapid response to thermal events (Power Technologies Singapore) .
OMEGA Engineering Singapore offers fiber optic infrared temperature measurement systems suitable for harsh industrial environments. Their products, such as the OS4000 series and iR2™ Series, provide non-contact temperature monitoring from 200°C to 1600°C and up to 3000°C for specialized applications. These systems are immune to electromagnetic and radio frequency interference, can be installed in hard-to-reach locations, and are ideal for high-voltage or explosive hazard areas. OMEGA also provides local technical support and application engineering services in Singapore (OMEGA Engineering Singapore) .
Yokogawa's DTSX series enables predictive maintenance by monitoring temperature changes over long distances and wide areas in real time. The system is suitable for steel, chemical, and power plants, as well as transportation infrastructure. DTSX sensors can be laid along the shape of the object being measured, providing continuous line monitoring that complements point and surface sensors. Models include DTSX1, DTSX200, and DTSX3000, offering scalable solutions for medium to large areas with high temperature resolution (Yokogawa SE Asia) .
Luna provides high-definition distributed temperature sensing using Rayleigh backscatter in optical fibers, delivering sub-millimeter spatial resolution. Their systems, including ODISI, HYPERION, and OptaSense QuantX, support multipoint and long-range temperature monitoring up to 100 km. Luna's fiber Bragg grating (FBG) sensors allow multiplexing multiple points on a single fiber, offering precise and stable measurements in environments where traditional sensors cannot be installed (Luna Inc.) .
AP Sensing specializes in fiber optic LHD systems for fire detection and temperature monitoring in large facilities, such as cold storage warehouses in Singapore. Their systems integrate DTS units with SmartVision GUI, enabling monitoring of multiple channels on a single platform. The fiber optic sensor cables operate from -40°C to +85°C and are certified to international standards (EN54-22, UL521, FM, ATEX, IECEx, SIL2). AP Sensing provides local support, on-site training, and maintenance-free operation, making it suitable for industrial and automated storage environments (AP Sensing Singapore) .
For organizations in Singapore seeking fiber optic temperature measurement systems, these manufacturers provide a range of solutions:

High-temperature measurements above 1000 °C are critical in harsh environments such as aerospace, metallurgy, fossil fuel, and

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Using sensing technology that takes advantage of the characteristics of fiber optic cable, DTSX is a temperature sensor that can be

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Home » Temperature » Fiber Optic Temperature Measurement Fiber Optic Temperature Measurement Fiber Optic monitors and

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