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Home Sensors Thermoelectrically cooled sensor for determination of elemental composition of soil

Thermoelectrically cooled sensor for determination of elemental composition of soil


  1. Energy resolution, not worse, 600eV. For energy of 5.9 keV.
  2. Isolation resistance between disconnected electrical circuits, not over, 20МОhm. At relative humidity of 80%.
  3. Power requirement in the supply circuit of thermoelectric cooler,40 W.
  4. Time of achieving the mode, not more,10 mines.
  5. Supply voltage of thermoelectric cooler, 12±5V.
  6. Pressure inside thermoelectrically cooled sensor, not over, 5*10- 3mm Hg. In operating state.
  7. Cooling at ambient temperature of 0oC, not over, minus 1000С.
  8. Weight, not over, 1500g.
  9. Service life at continuous operating mode, not over, 2 hours.
  10. Service life at periodic operating mode, not less, 30 hours.
  11. Possibility of failure-free performance, not less, 99.9%.
  12. Time of depressurization of thermoelectric sensor, not less, 5 mines.

Innovative Aspect and Main Advantages

Si (Li) detector is used as an X-ray-gamma sensor.

To provide high sensitivity and resolution of the sensor, thermoelectric cooling down to the temperature of minus 100oC is used.

Thermoelectrically cooled sensors provide energy resolution of order 600 eV for the energy of 5.9KeV, allowing to determine element concentration in the soil up to 10-6.

To measure the energy resolution of thermoelectrically cooled sensors, the Fe55 and Co57 isotopes have been used.

Fig. 1 Thermoelectrically cooled sensor for the determination
of element composition of soil.

Stage of Development

Tested, available for demonstration – field tested. Already on the market.

Contact Details

Organization: Institute of Thermoelectricity
Contact person: Lavska Lyudmyla
Address: General Post-Office, Box 86, Chernivtsi, 58002, Ukraine
Теl: (3803722) 7 58 60
Fax: (3803722) 41917
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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