FOTEMP OEM-Plus Fiber Optic Thermometer

FOTEMP OEM-Plus Fiber Optic Thermometer

Fibre Optic Thermometer

The thermometer FOTEMP-OEM-PLUS with fiber optic sensors is ideal for the use in microwave, high frequency, high voltage and magnetic field or aggressive environments where measurement with metal temperature sensors (RTC, TC, capillary,…) is not possible.

The measure principle use the change of the optical properties of a gallium arsenide crystal (GaAs) with the temperature.


Number of Channels 1,2 or 4
Power Supply > 12 VDC, incl. power
Power Consumption 350 mA
Measurement Range -200 .. 300 °C
Standard Deviation * +/- 0.2 °K
Resolution 0.1 K
Measuring Time / Channel < 250 ms
Analog Output 0-10 V or 4-20 mA
Communication USB and RS232 or RS485
Calibration 16 points over measurement range
Display 2.8“ color
Storage Temperature -20 .. 70 °C
Operating Temperature -10 .. 60°C
Weight 0.5 kg
Dimensions 195 x 110 x 90 mm
Communication Protocols ASCII over RS232 and USB, Modbus RTU over RS485
Relays 4 relays, optional

* The “expanded uncertainty of measurement” is the product of the reported standard deviation and the coverage factor k=2. It corresponds to a normal distribution to a coverage probability of approximately 95 %.
**Mean value. This value depends on the used sensor and its enviromental temperature


  • Easy OEM migration
  • Rugged and easy to use
  • Small footprint
  • Measuring range – 200 °C to + 300 °C
  • Possible standard deviation* +/- 0.2°C
  • RS232, USB interface
  • Analog Output


  • EMI, RFI and microwave environments
  • High voltage environments
  • Process monitoring
  • Medical applications (MRT)