As an example: 10km of fiber optic cable can be used to sense temperature at 1-meter intervals with an accuracy of 1°C, providing users with 10 000 temperature readings using one measuring device.
The standard robust fiber optic sensor cable can withstand long-term operating temperatures between -40°C to +85°C, as well as short-term exposure to temperatures up to 150°C. Other fiber cable options are available for extreme conditions.
These minute light signals contain information about the temperature of the glass at any given point in the fiber. The back-scattered light signals are analysed by using the Raman effect *.
The position of the temperature reading along the fiber length is determined by measuring the arrival timing of the returning light pulse (similar to a radar echo). This method is called Optical Time Domain Reflectometry (OTDR).
- Power Cable Monitoring
- Fire Detection (EN54-22 certified)
- Tunnel temperature monitoring (e.g. Mine, road, rail and cable tunnels)
- Pipeline Monitoring (Leak detection)
- Conveyor belt monitoring
- Cable rack monitoring
- Fast and accurate
- Easy to install
- Immune to EMI, dirt, dust and humidity
- Virtually maintenance free
- Multiple alarm types and criteria
- Facilitates fast response to events