Distributed Temperature Sensing (DTS) is a technology that uses optical fibers to measure temperature along their entire length. DTS works on the principle of Raman scattering, which occurs when light interacts with the molecular vibrations of a material.
In a DTS system, a laser sends a continuous wave of light into a fiber optic cable. As the light travels along the cable, it interacts with the molecular vibrations of the material in the cable, causing a small shift in the wavelength of the light. By measuring the wavelength shift of the light, the system can determine the temperature of the material at each point along the cable.
A high accuracy of temperature determination is achieved over 50 km distances and those systems can locate the temperature to a spatial resolution of 1 m with accuracy to within ±1°C at a resolution of 0.01°C.
DTS technology offers several advantages over traditional temperature sensing systems, including the ability to measure temperature along long distances with high accuracy and resolution. The technology can also be used in harsh environments, such as high-pressure and high-temperature conditions, where traditional temperature sensors may not be suitable.
DTS has applications in various industries, including oil and gas, power generation, and environmental monitoring. In the oil and gas industry, DTS is used to monitor the temperature of pipelines, wellbores, and reservoirs. In the power generation industry, DTS is used to monitor the temperature of power cables, transformers, and generators. In environmental monitoring, DTS is used to monitor the temperature of soil and water in ecosystems.
Overall, Distributed Temperature Sensing is a powerful and versatile technology that provides accurate and reliable temperature measurements along long distances. Its ability to work in harsh environments makes it a valuable tool for a variety of industries, where temperature monitoring is critical for safety and operational efficiency.