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FOTEMP-Modular Multichannel (1-255) System


FOTEMP Modular

Fiber Optic Thermometer

The new modular fiber optic thermometer FOTEMP Modular system offers maximum flexibility for all of your measurement projects and is suitable for applications which require a simultaneous readout of the measurement channels with high speed. The fiber optic thermometer consists of a 19″ case which provides place for up to 40 simultaneous channels in a total of 10 modules. Each module can be easily removed or replaced. One simply needs to remove the old module from the slot and insert the new one. We offer a variety of features e.g. 1-4 channels per module, additional analog outputs and display versions.

The FOTEMP Modular system can be connected to the computer via a serial interface. Via the software Fotemp-Assistent all measurement results can be easily controlled and monitored via computer. The software features direct data logging and data saving to a Microsoft Excel spreadsheet.

The fiber optic thermometer FOTEMP Modular system is especially adapted for industrial needs: among other things this includes low maintenance, robust components and the ability to withstand the toughest conditions, the system adapts perfectly to the most stringent environmental conditions with regard to shock, vibration, moisture and variations in pressure and temperature.

All components of the fiber optic thermometer, such as the light source guarantee a long service life. The FOTEMP Modular system is compatible with all our fiber optic probes. The outer jacket of the fiber optic temperature sensors is made out of teflon, at the sensor tip a GaAs crystal (gallium arsenide) is attached. The probe sensor is completely non-conductive. Optocon’s fiber optic sensors offer complete immunity to RF and microwave radiation with high temperature operating capability, intrinsic safety, and non-invasive use. The probes are also designed to withstand harsh and corrosive environments.

Starting at a light wave length of 850nm GaAs becomes optical translucent. Since the position of the band gap is temperature dependent, it shifts about 0.4nm/Kelvin. The measurement device contains a light source and a device for the spectral detection of the band gap. This guaranties fast, repeatable and reproducible measurements.


Channels / system

1-40 (Primary chassis),

1-255 (Fully expanded system

Modules / device 10x 7TE or 5x 14TE
Channel / module 1-8
Power supply 100-240VAC / 50-60Hz
Measuring range —200°C to +300°C
Accuracy +/— 0.2°C
Resolution 0.1°C



250ms for 1 channel module

500ms for 2 channel module

1 sec for 4 channel module

Analog output Option: 0-10V or 4-20mA
Digital interface

Standard: RS-232 and USB

Options: RS485 / Profibus / Modbus

Optical interface ST, comptible with all TS series fiber optic temperature probes
Protocol ASCII software protocol available for custom programming applications
Data logging Supplied with FOTEMP-Assistant data logging software. Excel compatible output files.
Display OLED color display for modules specified with display option

Storage: -20°C to +70°C

Operating: 0°C to +50°C

Weight 8.0 kg (basic system)
Dimensions 19″, 3HE (132,5 x 150 x 302 mm)
Material Aluminium casting, metallic
Warranty 2 years

Stamdard -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

Ordering Information

Contact Micronor to discuss your mutilichannel system requirements.

On a cost per channel basis, the FOTEMP Compact Bench Top and FOTEMP-TRAFO DIN Rail Mount systems are the most cost-effective.

FOTEMP-Modular system makes the most sense when either faster update rate (maximum 250ms) OR 8 or more channels is required.


  • Modular system for up to 255 channels
  • Up to 8 channels per module
  • Measuring range: -200°C to +300°C
  • High accuracy: +/-0.2°C
  • Easy to upgrade by adding modules
  • Easy interchangeability of modules
  • Each module with status LED
  • Relay modules & alarm LED modules
  • Multiple systems can be cascaded
  • Analog output options: 0-10V or 4-20mA
  • Digital Interface options: RS232 (Standard), USB,RS485, Modbus, Ethernet, Profibus
  • Customer specific, individual configuration


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




Call +1-805-389-6600 or email

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