Systems with Defined Spots along the Fiber

Monitor Temperatures over Long Distances

The measuring technology is based on so-called fiber Bragg gratings (FBGs). FBGs are created by means of the fiber being exposed to intense UV radiation at a certain position at regular intervals. Several FBGs (typically 15 to 20) can be written to a single fiber and can be read out simultaneously with a single system. This technology enables you to monitor temperatures across long distances of up to several kilometers. The glass fiber is guided in a capillary or a protective tube. The measuring range includes cryogenic temperatures and ranges up to approximately +600 degrees Celsius attainable accuracy of up to 0.1 degrees Celsius and a maximum spatial resolution of roughly one centimeter.

Polytec makes fiber sensors depending on the interrogator (readout system) used and the application – fully in line with your individual requirements.

Fiber Optic Temperature Sensor in Steel Tube