Electromagnetic BTU meter is designed to accurately measure the heat or cold energy of a water heating/cooling circuit. It is consisted of three parts, an electromagnetic flow sensor, a pair of temperature sensors and a main unit. The main unit is a powerful console which combines high accuracy flow measurement, temperature measurement and BTU calculation.
The temperature sensors are high accuracy 3-wire PT1000 sensors. They are paired and calibrated in factory to achieve better than 0.15°F (0.08°C) accuracy for temperature difference measurement.