Fibre-Optic Temperature Measurement
Optical fibre temperature measurement – application of this innovative technology can be exemplified by temperature measurement for belt conveyor systems; the total length of such systems frequently comes up to several kilometres. In this case, a precise temperature measurement makes it possible to spot immediately a failure or an overheated element which can be a source of fire or explosion of dust atmosphere.
Monitoring temperature of power supply cables, detecting fires, monitoring temperature distribution in buildings, monitoring leakages in dams, flood embankments or dykes – these are only few applications of this innovative technology from among hundreds.
The system offered allows for a precise temperature measurement of thousands of control points situated on a distance of ten or so kilometres with the use of barely one sensor. The technology that enables the measurement is applied not only in production process, but also in civil engineering.
An example of application of this innovative optical fibre technology is temperature measurement for belt conveyor systems, the total length of which frequently comes up to several kilometres. In this case, a precise temperature measurement makes it possible to spot immediately a failure or an overheated element which can be a source of fire or explosion of dust atmosphere.
The measuring system records the ambient temperature and compares it with the algorithm set.
When temperature rapidly grows and exceeds the set threshold, the system warns of the rising fire hazard.
The system can be freely configured, which means that many alarm thresholds can be introduced, depending on the situation and potential hazard areas. On the whole, 256 monitoring sections can be created and alarm can be generated at the time of:
- Exceeding the set temperature threshold, e.g. 50˚C
- Constant temperature rise in a short time set, e.g. 60 s
- Local overrun of temperature by e.g. 10˚C in relation to the mean
- Temperature measured in a particular monitoring section
- Temperature drop below a threshold set, e.g. 0˚C
- A very precise measurement of temperature (0.3 K) and its changes in time
- A very precise location of the spot of temperature change
- Long-term temperature monitoring
- Possible multiple reconstruction of temperature measurements
- The sensory cable is easy to install (as an electric cable)
- Lack of cable effect on the monitored object
- Halogen-free cable, safe for people in case of a fire
- Lack of current passage in the cable (explosion-proof, electromagnetic compatibility)
- Possible operation in difficult conditions (dustiness, pollution), resistance to corrosion, UV rays, water