Heat metering by ultrasound

The new ultraheat 2WR5 ultrasonic heat meter from the Siemens Power Transmission and Distribution group (PTD) of Erlangen, Germany, is currently the only ultrasonic heat meter in the world whose volumeter, even for low flow rates from 0.6 to 2.5 m3/h, is all-metal. Thus, the heat meters volumeter operates without any wear and manages without moving parts in the flow rate sensor. This ensures the necessary sturdiness and low life cycle costs. Siemens assigns the meter a useful life of more than 15 years. A patented ultrasound signal guidance system enables a measuring accuracy that exceeds the German PTB and the European CEN stipulations, because exact volume measurement, even if consumption is very low, signifies additional income for the operator. The new meter is the result of merging the two previous Siemens Sonogyr and Ultraheat 2WR4 heat meter ranges. It is available for all usual nominal flow rates from 0.6 to 60 m3/h and the associated overall lengths.