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FOTEMP Benchtop Fiber Optic Temperature Signal Conditioner
FOTEMP Benchtop Fiber Optic Temperature Signal Conditioner


Fiber Optic Thermometer

IMPORTANT NOTE: This model is no longer available, directly replaced by FOTEMP-PLUS series.

The bench top fiber optic thermometer FOTEMP1-2-4 combines innovative design with user-friendly functionality. The modern design makes the temperature measurement efficient and offers complete immunity to RFI, EMI, NMR and microwave radiation when used with TS series GaAs-based fiber optic temperature sensors.

The FOTEMP1-2-4 has an innovative appearance: It has a large screen and a modern keyboard for control of the instrument’s operating parameters . The user-friendly display supports high-precision measurements, while the color LCD display offers excellent readout of the measurement values even in low light conditions. The menu supports two languages, German and English. With its compact design. Interface options, including analog and relay outputs, make the device very versatile. The supplied “FOTEMP-Assistant” data logging software allows a detailed evaluation via PC with direct export of data to an Excel spreadsheet.

This FOTEMP instrument has a measuring range from -200°C to +300°C with accuracy of ±0.2°C. The fiber optic thermometer offers immunity to RFI, EMI and microwave radiation, making it ideal for environments where the use of conventional temperature measuring instruments and thermocouples cannot be used. It is compatible with all TS series GaAs-based fiber optic temperature sensors and is ideal for any application in the lab and industry.


Number of channels 1-4
Power supply 100-240VAC / 50-60Hz, > 10 VA
Measuring range — 200 °C to + 300 °C
Accuracy +/— 0.2 °C
Resolution 0.1 °C
Sampling rate/Channel 250ms
Analog output 0-10V or 4—20mA
Digital interface

Standard: RS-232 and USB

Option: RS-485

Relay output Option: 1-4, Programmable
Protocol ASCII software protocol available for custom programming applications
Datalogging Supplied with FOTEMP-Assistant data logging software. Excel compatible output files.
Display 7,1 cm (2,8″) LCD-TFT color display
Optical interface ST, Compatible with all TS series fiber optic temperature probes

Storage: -20°C to +70°C

Operating -20°C to +60°C

Dimensions/Weight/IP 205 x 267 x 81 mm, 1.2 kg, IP54
Material ABS/PC in RAL9003
Warranty 2 years

Standard -30°C to + 300°C

Optional -200°C to + 300°C

Calibration Intervals Under normal use, the instrument does not require recalilbration. When sensors and cables are changed, a One-Point Calibration is required. Recommended cal interval is 12 months for ISO systems.

Specifications subject to change without notice


  • Modern compact, bench top design
  • 1-4 measuring channels
  • Temperature display in °C, F or K
  • Measuring range: —200°C to +300°C
  • High accuracy: +/—0.2°C
  • Large 7,1cm (2,8″) LCD-TFT color display
  • Status LED
  • Easy and intuitive user interface
  • Quick and easy temperature measurement
  • 1-4 relay output option
  • 0-10V or 4-20mA analog output option
  • Built-in RS-232 and USB interface
  • RS-485 interface option


  • EMI, RFI and microwave environments
  • High voltage environments
  • Harsh and hazardous environments
  • Nuclear environments
  • Aerospace applications
  • Process monitoring
  • Medical applications (MRI)




Call 805.389.6600

Ordering Information


This model is no longer available, replaced by FOTEMP-PLUS series

Fiber Optic Bench Top Signal Conditioner
where W=No. of Channels: 1, 2 or 4
where X=Interface: P0=USB+RS232
where Y=Analog Output Option: Blank=None, V=0-10V, M=4-20mA
where X=Calibration Option/Measurement Range:: B=-40°C to +300°C, C=-200°C to +300°C

Quick Ship Configurations

FOTEMP4-PLUS-P0-V-B 4 Channels, USB+RS232, 0-10V, Calibration=-40°C to +300°C
TS2 Sensors, General Purpose TS2-02 or TS2-06
TS3 Sensors, General Purpose, Rigid Tip TS3-10MM-02 or TS3-10MM-06
TS4 Sensors, Harsh TS4-02 or TS4-06
TS5 Sensors, Medical TS5-20MM-02 or TS5-20MM-06