FIELD: measurement technology. SUBSTANCE: method of calibration of system measuring thermal energy of heat-transfer agent is based on connection of standard measuring aid to pipe-line with heat-transfer agent. In this case flow of heat-transfer agent is directed from supplying pipe-line through standard aid to return pipe-line. Later readings of calibrated system and standard aid are compared and difference in readings of flow rate, amount and temperature of heat-transfer agent in calibrated measurement system through return pipe-line is taken into account. Device for implementation of method has standard aid, pressure regulator for feed of heat-transfer agent and circulation pump installed according to closed circuit between supplying and return pipe-lines. Unit to subtract readings of supplying and return pipe-lines is linked to output of calibrated system and to input of aid processing data of comparison of readings. EFFECT: increased authenticity of calibration of system measuring thermal energy. 3 cl, 1 dwg
