The structural and functional diagrams of the thermoanemometric type sensor for measuring the mono- and biphasic (liquid + gas) medium by the pulsating nature of the flow are presented. The temperature distribution in the sensor environment is considered and the sensing elements are not in contact with the inner surface of the sensor body. On the basis of the heat balance equation, the equations were obtained to simulate the temperature of the sensing elements of the sensor, depending on the power consumption, the characteristics of material of the sensor elements, their mass and design dimensions, the thermal and technical characteristics and the kinematic parameters of the measuring environment. The results of temperature modeling of the sensing elements for measuring the flow of milk and water are presented. The process of heat flux propagation with an internal heat source from the sensing element of the sensor with a cross-sectional radius is considered, described by the differential equation of the intensity of the temperature propagation taking into account the thermal conductivity of the measuring medium and the material of the sensing element of the sensor. The equation for modeling the temperature at the boundary of the temperature field distribution of the sensing elements of the thermoanemometric sensor was obtained. The results of temperature modeling at the boundary of the temperature fields of sensor elements are presented. The simulation of the temperature of the sensing elements of the sensor and the distribution of the temperature field in the measuring environment is made taking into account the coefficient of heat transfer of the sensor elements and the coefficient of thermal conductivity of the medium. The results of modeling the temperature change at the boundary of the temperature field and its distance from the elements depending on the flow velocity of the measuring medium are presented.
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