FIELD: temperature; thermometry.
SUBSTANCE: invention can be used in the operation of icing sensors used to determine conditions, for example, of road surfaces and runways. A method for determining the volume of a sample of water-salt solutions using a thermoelectric icing sensor involves setting and stabilizing the initial temperature of the contact surface by adjusting the thermoelectric module, cooling the contact surface at a constant rate by adjusting the thermoelectric module, and simultaneously taking readings from the temperature sensor and heat flow sensor. The heat capacity of the cuvette with the sample is determined by measuring the amount of heat passed through the heat flow sensor during cooling from the temperature of the beginning of the cooling phase to the minimum temperature before the start of crystallization (supercooling temperature of the sample). The resulting heat flow integral divided by the difference between these temperatures is the heat capacity of the cuvette. By subtracting the previously known heat capacity of the dry cell, the heat capacity of the sample itself is determined. From the known specific heat capacity and physical density of water or a sample of a water-salt solution, the mass and volume of the sample are determined.
EFFECT: improved measurement accuracy.
3 cl, 2 dwg, 1 tbl
