Multichannel high temp meter with strong EMI immunity

4-channel high temp meter uses sheathed fiber optics

MultiChannel High Temperature Meter (MC-HTM)
MultiChannel High Temperature Meter (MC-HTM)

Minsk, Belarus — The MultiChannel High Temperature Meter (MC-HTM) is designed to replace traditional temperature sensors as thermocouples, thermistors etc. for high (> 600 ??C) temperature areas in presence of strong electromagnetic fields.

Applications area: microwave and inductive heating, high voltage equipment, intensive electromagnetic interference (EMI) environment and so on.

The optical system of MC-HTM collects light irradiation from the bottom of standard Ceramic Thermocouple Protective Tube, transfers it by fiber optics to MEMS (microelectromechanical systems) ??? based multichannel optical switch and then into a spectrophotometer.

The temperature is defined as a parameter of the detected spectral distribution in visible/near-infrared range by direct fitting the data of the spectrophotometer to Planck’s law.

This design of MC-HTM allows measuring the temperature profiles, having up to 24 or more independent channels in the temperature range 600????C – 1950????C with accuracy of 0.5%.?? The calibration parameters are stable over long operation times.

Key distinctive features/advantages of MC-HTM are:

  • Able to measure temperatures where others cannot ??? at microwave oven, under high voltage potential etc.;
  • Long-term stability, the reading does not depend of optical signal amplitude nor from contamination/degradation/misalignment of optical parts;
  • High temperature operation, upper bound is limited by protective tube material.

Summary specification of 4-channels high temperature meter (experimental model):

  • Channels number: 4
  • Temperature range,????C:?? 600 ??? 1950
  • Accuracy, % : 0.5 or better
  • Calibration interval: one year

Thermoprobe dimensions:

  • Working part external diameter, mm: 3-19
  • Working part length, mm: 150-600

Control Unit:

  • Dimensions, mm: 225x180x112
  • Weight, kg: 2.2
  • Length of connecting fiber optic cables, m: 5 and more

Price Starts at $20,500

More details online at


The A.V. Luikov Heat and Mass Transfer Institute of NAS of Belarus was established on the basis of the order of the USSR Council of Ministers dated of July 29, 1952 as the Institute of Power Engineering of the BSSR Academy of Sciences. Since 2001 it is the state scientific institution with the same name.
Today the A.V. Luikov Heat and Mass Transfer Institute of NAS of Belarus is the largest academic institution in the Republic, which is engaged both in solving fundamental and applied problems of heat/mass transfer, fluid dynamics, power engineering, thermal engineering, etc. and in developing energy-efficient and environmentally friendly technologies and equipment, facilities for power engineering and engineering, agro-industrial complex and construction industry, medicine, as well as for chemical, electron, radio, food, space industry.
In 2012, the Institute is accredited as a scientific organization in the State Science and Technology Committee of the Republic of Belarus and the National Academy of Sciences (NAS) of Belarus.

15, P.Brovka Str.
220072, Minsk

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