1. Installation must be carried out under the guidance of professional personnel. 2. Before installation, ensure that the appearance of the heat meter is not damaged and the temperature sensor cable is not damaged. 3. Confirm that the installation pipeline is consistent with the nominal diameter of the heat meter. 4. Confirm that the pipelines at both ends of the heat meter installation are on the same axis (with a deviation of no more than 5mm). 5. Ensure that the water flow direction marked on the heat meter is consistent with the actual direction. Ultrasonic heat meter, heat meter, is an instrument for calculating heat. The working principle of a heat meter is to install a pair of temperature sensors on the upstream and downstream pipes passing through the heat transfer fluid, and a flow meter on the fluid inlet or return pipe (the final measurement result varies depending on the location of the flow meter installation). The flow meter emits a pulse signal proportional to the flow rate, and a pair of temperature sensors provide an analog signal representing the temperature. The integrator collects signals from the flow and temperature sensors and uses the integration formula to calculate the heat obtained by the heat exchange system. Compared with the household meters commonly used in the construction industry in the past - water meters, electricity meters, and gas meters, it has a more complex design and higher technical content.