OTG-M3000 Fiber Optic Temperature Sensor

High accuracy SCBG-based fiber optic temperature sensor for tip measurement applications.

Opsens Solutions’ OTG-M3000 fiber optic temperature sensor offers the highest performances in the industry. The OTG-M3000 sensor uses the well proven technique based on the temperature-dependent bandgap of GaAs crystal as the temperature transduction mechanism.

Combined with Opsens Solutions’ SCBG (Semiconductor Bandgap) signal conditioning technology and with the inherent advantages of fiber optic, the OTG-M3000 delivers unprecedented repeatability and reliability in the most adverse conditions such as high level of EM, RF, MR and microwave field environments.

This compact and robust fiber optic temperature sensor is available with different optical cables and sheath options and is customizable according to customer specific applications or for OEM-type applications.


  • ± 0,3 °C accuracy
  • Robust design
  • Outstanding repeatability
  • EMI/RFI and microwave immune
  • Intrinsically safe
  • OEM-type and disposable version available


  • Surface or core temperature monitoring in EMI environments
  • RF and ultrasound environments
  • Temperature monitoring for preclinical and research applications
Typical temperature operating range

+20 °C to +45 °C (Other ranges available upon request)


0.01 °C


± 0.3 °C (Range from +20 °C to +45 °C including both signal conditioner and sensor errors)

Response time

1.5 s typical

Operating humidity range

0-100 %

MRI/EMI/RFI susceptibility

Complete immunity


NIST traceable

Cable length

1.5 meters standard (Other lengths available)

Optical connector

ST standard

Cable sheathing

3 mm O.D. PVC

Signal conditioner compatibility

All Opsens Solutions’ SCBG signal conditioners

Opsens Solutions Inc. reserves the right to make any changes to the above specifications without prior notice.

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