mõõtevahend keha temperatuuri mõõtmiseks keha eredustemperatuuri sõltuvuse abil, measuring instrument for the measurement gas temperature from measurement of the radiation emitted by a calibrated reference source before and after this radiation has passed through and been partially absorbed by the gas, mõõtevahend kiirgava keha temperatuuri mõõtmiseks, modern pyrometer has an optical system and a detector and the optical system focuses the thermal radiation onto the detector, pyrometer that measures temperature by means of determining the intensity of the light of a particular wavelength emitted by a hot body