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J-MAG-R electromagnetic energy meter is a measuring instrument for measuring the heat and cooling released by the heat carrying fluid in a heat transfer system. It uses high-precision Pt1000 platinum thermistor for temperature measurement and has excellent measurement performance. It is widely used for energy measurement of centralized heating and cooling in residential, office buildings, and public institutions. It has the function of displaying data such as accumulated energy, accumulated flow rate, instantaneous energy, instantaneous flow rate, inlet temperature, outlet temperature, etc. simultaneously; Equipped with Modbus, Hart, GPRS, and digital communication outputs, it is convenient to achieve remote meter reading.