Systems with Defined Spots along the Fiber

Monitor temperatures over long distances

The measuring technology is based on 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 temperature monitoring 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° C with an attainable accuracy of up to 0.1° C and a maximum spatial resolution of roughly 1 cm.

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