Ultrasonic heat meter 1,Adopting forging process for the pipeline. 2,Setup MBUS, connect to GPRS 3,No require water quality ... no reflection surface so it won't stop water flow4,Conplelty not affected by impurities,chemicals and ... year long-life battery M-bus remote system,optional RS485. Not affected by external magnet field and steady ... MBUS, connect to GPRS Factory price of Ultrasonic heat meter