Heat meters ULTRAMETER (hereinafter heat meters), designed to measure the amount of heat released in the heat exchange circuit, the volume of coolant, the coolant temperature in the flow and return pipe, running time; the measured physical quantities, as well as thermal power, volume flow of coolant, the coolant temperature difference in the supply and return lines, the current time and date. Heat meters are used for accounting, including commercial heat in heating systems at industrial facilities and publi