FIELD: measuring devices.
SUBSTANCE: invention relates to methods of temperature measurement in power units. As temperature sensor used containers filled with colloidal solution of single-domain ferromagnetic nano particles. Between containers, as well as at side surface of one of them NMR sensors are located. Said containers are placed in constant magnetic field. Then based on f1 and f2 frequencies of nuclear magnetic resonance obtained by means of NMR sensors values of magnetisation M and saturation magnetisation Msat are calculated. Additionally exposing colloidal solution to radio-frequency magnetic field, resonance frequency of this field Fres is determining, in which reduction of magnetisation M occurs. Temperature of colloidal solution in power units is determined by formula T = hFresM/3Msat, where h is Planck's constant.
EFFECT: technical result is enabling temperature measurement in power units without using reference point of thermodynamic temperature scale.
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