Fiber optic temperature sensor


Lsens-T Fiber optic temperature sensor

  • 1.1mm diameter PTFE protected.
  • Outstanding repeatability with high flexibility
  • Complete immunity to RFI, EMI, NMR and microwave radiation
  • Does not require recalibration or complex input to operate
  • Liquid proof and withstands aggressive chemical solutions

A multi use fiber optic temperature sensor for measurement in a wide range of demanding applications, where immunity to electromagnetic fields is mandatory and explosion proof requirements.

Product Summary

A multi use fiber optic temperature sensor designed for a wide range of applications, especially for the use in demanding applications, Sensor offers complete immunity to RFI, EMI, NMR and microwave radiation. The standard temperature sensor has a response time of 0.2s. With a standard deviation of +/-0.2°C it allows precise and repeatable measurements. The coating of temperature sensor is made of PTFE, the fiber tip has a diameter of 1.7mm with Rugged Polyimid coating and has a stainless steel ST-connector. For mechanical stability and applications e.g. in oil special protective coatings and hoses are available. The fiber optic probe consists of a PTFE protected glass fiber and a GaAs-crystal (Gallium Arsenide) at the sensor tip. It is totally free of metal and immune to external fields, therefore probes are explicit suitable for the use in high temperature ranges as well as in aggressive operating environments. The sensor cable can be from several meters to kilometers long without influencing the accuracy of the measurement result. Other sensor lengths and connector types are available upon request.


  • Magnetic, RF and Microwave environments
  • High voltage environments
  • Nuclear and hazardous environments
  • Medical applications
  • Microwave assisted chemistry
  • Sterilization applications
  • RF and microwave drying applications
  • Sensors does not require any recalibration
  • High Stability, No shift over time
  • Optional spiral wrap
  • Robust fiber optic temperature sensor
  • Available in different cables and sheath options
  • Customizable according to customer specific applications
  • Suitable for OEM-type applications.
Temperature range

-200°C to +250°C

Temperature range (Optional Range extensions)

Up to -4°K/ +300°C



Accuracy absolute temperature

+/- 0.8°C

Accuracy relative temperature

+/- 0.2°C

Probe sheathing material

Teflon Coated


Stainless Alloy/ Optional - Dielectric

Response time

Upto 0.2sec

Probe sensitive area

1.1 mm Diameter


XX = Lenght in Meters

  • YY = Bare Length in Meters
  • B = Bare tip
  • W = Spiral wrap on the length except on the last 10 cm

We deliver high performance fiber optic sensing solutions to a wide range of applications.