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

Summary Products

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Lsensp fiber optic sensor

"The safer and rugged temperature sensors for range of applications in Medical, Nuclear, Emobility, Research and industrial segments. Their high accuracy and repeatability over wide temperature range makes them ideal for applications, where immunity to electromagnetic fields is mandatory. The LSENSP sensors offer complete immunity to RFI, EMI, NMR and Microwave radiations. The sensors can be installed under harsh environments without any isolation. The sensors do not need on-site calibration and compensation. "

  • Small tip Polyimide, protected 
  • Outstanding repeatability with High flexibility
  • Complete immunity to RFI, EMI, NMR and microwave radiation
  • Does not require recalibration or complex inputs to operate
  • Cryogenic temperature range  ( as low as 4 °Kelvin ) 


A multiuse fiber optic temperature sensor designed for a wide range of applications, especially for the use in demanding applications. The sensor offers complete immunity to RFI, EMI, NMR and microwave radiation. The standard temperature sensor has a response time of 0.2 s. With a standard deviation of +/-0.2 °C it allows precise and repeatable measurements. The coating of the temperature sensor is made of PTFE, and the fiber tip has  0.3 mm x 0.3 mm area with a Polyimide coating. 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 is immune to external fields. Therefore, the probes are explicitly suitable for use in large temperature ranges as well as in aggressive operating environments. The sensor length can be from several meters to 1 kilometer in length without impacting the accuracy of the measurement result. Other sensor lengths and connector types are available upon request.


  • Medical applications
  • Cryogenic and vacuum environment Available ( Optional )
  • RF and Microwave drying applications
  • chemical and Process Industries
  • High voltage environments
  • Nuclear and hazardous environments
  • Electric Vehicle and Battery Testing

Benefits of Fiber Optic sensors

  • Sensors do not require any recalibration
  • Suitable for OEM-type applications
  • Customizable according to customer specific applications
  • Available in different cables and sheath options
  • Robust fiber optic temperature sensor
  • Optional spiral wrap
  • No shift over time, high stability

Technical Specifications

Temperature range-200 °C to +250 °C
Temperature range (Optional Range extensions) Down to 4 °K / Up to +300 °C
Repeatability0.2 °C
Accuracy absolute temperature+/- 0.8 °C
Accuracy relative temperature+/- 0.2 °C
Probe sheathing materialTeflon Coated, with Polyimide protection for sensor tip
ConnectorStainless Alloy / Optional - Dielectric
Response timeUp to 0.2 Sec
Probe sensitive area - Diameter 0.7 mm
Protective Tube - DiameterTeflon / 1.4 mm
LongevityProbe accuracy & repeatability constant over time

Ordering Code

fiber optic sensor Lsensp ordering code


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