Temperature measuring systems with continuous measuring point sequence

Record temperature profiles over long distances

In distributed measuring systems, no sensors need to be introduced into the fiber. Rather, backscattered light is evaluated by the fiber material itself to obtain the desired temperature information. These systems are based on the evaluation of the Rayleigh scattering and enable the acquisition of temperature profiles along the glass fiber with resolutions in the millimeter range and up to 70 m long measuring sections. Thus, virtually every point of the glass fiber becomes the sensor. Conventional methods required hundreds or thousands of conventional point sensors with associated cables and immense installation effort.

For temperature measurement, the sensor fibers are usually performed in a capillary or a protective tube. Depending on the used interrogator (readout system) and the application, these can be inexpensive conventional standard glass fibers or can also be manufactured by Polytec according to your individual requirements.