FIELD: measuring equipment.
SUBSTANCE: invention relates to prevention and/or elimination of condensation on optical elements in gas sensors and, in particular, to use of thermoelectric heat pumps to prevent or eliminate condensation. Gas-sensitive device comprises a gas sensor configured to use light to detect presence of gas; optical element, arranged so that said light falls on it; as well as a thermoelectric heat pump having a cold side and a hot side, wherein the thermoelectric heat pump is configured to transfer heat energy from the cold side to the hot side in response to supply of electric power supplied to the thermoelectric heat pump, wherein thermoelectric heat pump hot side is in thermal contact with optical element; measuring volume; and heat absorber in thermal contact with thermoelectric heat pump cold side, wherein heat absorber is located in measuring volume.
EFFECT: technical result is creation of effective method of preventing formation of condensate and/or its elimination from optical elements in gas-sensitive device.
36 cl, 9 dwg
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