The solution for extreme temperatures

Flow measurement at high temperatures was until now even for clamp-on ultrasonic meters a troublesome business. On the one hand, the sound coupling gels required typically have a 250°C maximum temperature tolerance. On the other hand, high temperatures accelerate the ageing of the ultrasonic transducers' piezo elements and thus limit their useful operating life.

FLEXIM's patented WaveInjector overcomes these limitations. When fixed onto the pipe with this specially engineered assembly, the flow transducers send the sound signals into the hot pipe wall via optimized metallic coupling plates. These plates decouple the transducers thermally from the measuring point. Due to their form their heat radiating surfaces are several hundred times greater than their heat inducting surfaces. A considerable temperature difference between the surface of the pipe and the transducer is thus obtained. Even when the temperature of the surface of the pipe is very high, the temperature of the transducers will be smaller than the specified maximal temperature of the standard flow transducers. The measurement can thus take place with FLEXIM's standard general purpose flow transducers.