![]() Your system would not need to be shut down and your piping would not need to be altered.ĭevice will not obstruct flow or contaminate processes waste-water).īy far, the best reason to use an ultrasonic flow meter of any kind is the lower costs associated with installation. Therefore, Doppler ultrasonic flow meters are obviously better suited for aerated or impure water applications (i.e. Any shift in the frequency of reflections is proportional to the flow velocity. They are more appropriately used for clean and ultra-pure flows.ĭoppler Ultrasonic Flow Meters also send a sound wave into the flow, but contrary to transit-time technology, Doppler meters depend on suspended bubbles and particles in the water to reflect the sound waves providing a shift in the frequency. Transit-time flow meters are not suited for water with heavy aeration or high concentrations of solids or suspended particles as this can obstruct the sound waves. This difference in time is proportional to the velocity of the flow. Transit-Time Ultrasonic Flow Meters send a sound wave through the flow, relying on the difference in time between upstream and downstream times of flight. To do so, they employ one of two following principles of operation. Ultrasonic flow meters will detect and measure flow rates without invading the flow stream or using moving parts. Let’s review their pros and cons… Ultrasonic Flow Meters For water in many forms, magnetic and ultrasonic flow meters have become popular technologies. ![]() But, does the water contain bubbles or particles? Is it ionized? Answering these questions will make a big difference in the types of flow meters that would be ideal for your system. For a simple application like water, there are a dozen different technologies that can work well. Let’s talk about water applications, for example. Every meter technology will have its advantages and disadvantages, but it’s the nuances of your system and what is flowing through it that should garner the most attention. While selecting the proper flow meter technology for your system is critical, your ability to rely on the meter’s readings will depend more heavily on the application.
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