FBG Temperature Sensors


Miniature sensor can be spot welded to the monitoring surface (pipes, beams and other steel surfaces).



Sensor is used either for temperature monitoring or for thermal compensation of strain sensors. It can be glued to any monitoring steel surface.



Small steel case protects sensing element. Sensor can be embedded into сomposite materials and located into concrete. Type of mounting - anchors.



High-temperature sensor has a protective ceramic case. Absence of metallic elements allows to use the sensor under strong electric and magnetic fields.

T1 T2 T3 T4
Measurement range,°C -50…+100 -50…+80 -50…+80 +20…+150
Resolution, °C 0.1
Accuracy, % 0.1
Wavelength range, nm 1,500 - 1,600
Materials Stainless steel Aluminium Stainless steel Polyimide PTFE (Teflon)
Connectors FC/APC or without connectors
Dimensions, mm 10 x 40 x 3 26 x 5 x 2 ø 10 x 100 ø 3 x 500
Cable thickness, mm 0.9/3 0.9/3 2.7 3
Weight, g 1.5 2.5 130 40
Protection class IP68 - IP68 -

Optic fiber Bragg Grating sensor for temperature measurement provide many advantages over conventional electrical systems, particularly in applications that are exposed to harsh environments and require long-range, long-term deployments.

Bragg grating sensor is a perfect option for a variety of applications. These sensors are insensitive to the environmental changes and passive, which is a big upgrade compared to the regular electrical ones. They have higher accuracy and resolution, and they are immune to electric sparks. Long reliability period, ability to resist corrosion and other harsh environments are packed in a very compact size device.

One of the biggest advantages of FBG temperature sensor is the fact that its fiber optic temperature measurements are absolute, and it has the fastest response compared to other options. The highest return speed is perfect in the cases where temperature changes are fast and extreme.

Fiber optic temperature sensors are a perfect solution for difficult-to-reach locations and massive sensing networks. You can also use FBG temperature sensors for thermal compensation of any other FBG sensors

If you would like to purchase Optromix FBG Temperature Sensors, please contact us: or +1 617 558 98 58