Understanding how they work will help guarantee optimum performance. Inc. U sers and designers of flow metering systems can profit by keeping abreast of new developments. The ultrasonic flowmeter, a recent arrival on the scene, has profited from technological advances, especially those in electronic circuitry. And a supplier of Doppler flowmeters credits proprietary software and superior electronics design with opening up new application areas for this well-known technique. Both types of ultrasonic flowmeters feature clamp-on designs with transducer assemblies that detect flow rate from the outside.
Installation entails neither breaks in the line nor interruption of flow.
One recommendation is that where practical, the new user experiment with a clamp-on meter to investigate the feasibility of a permanent installation, perhaps with wetted transducers and the requisite changes in piping. The microprocessor-based converter is also shown. Figure 1 is a typical example of the ultrasonic flowmeters offered by at least 30 suppliers in the U.S. and Canada. Following are some of the capabilities of this particular model. The meter can measure pure water, wash water, sewage, process liquids, oils, and other light homogeneous liquids.