The Dynasonics® DFX Doppler Ultrasonic flow meter measures the flow of aerated liquids or those containing suspended particles that reflect ultrasonic energy.
The DFX ultrasonic Doppler flow meter measures flows of liquids containing suspended particles or aerated liquids. Used with the DT9 clamp-on, non-intrusive transducers, the meter is suitable for sewage and mud slurries and can be used on most pipes constructed from metal or plastic. The DT9 transducer for the DFX meter is rated to Type 6 (IP67) and has the ability to work with temperatures up to 194° F (90° C)
The Dynasonics DFX Ultrasonic Doppler flow meter features a clamp-on design that streamlines installation and eliminates the worries of fluid compatibility and pressure head loss.
• Streamline Installation. Because of its clamp-on design, the DFX Ultrasonic Doppler flow meter can be installed while operations run – there is no need to shut processes down or drain pipes.
• Application Flexibility. Measures liquids containing suspended particles or aerated liquids, making it suitable for applications with sewage and mud slurries.
• Simple Design. Does not have moving parts, which greatly reduces maintenance needs because there is nothing that will wear down over time.
| Size Range | 1/4…120 in. |
| Temperature Range | -40…400 °F |
| Flow Range | 0.15…30 fps |
| Accuracy | ±2% |
Successful application of Doppler ultrasonic flow meters relies on
three physical constraints:
• The liquid flowing within the pipe must contain 100 ppm of useful sonic suspended reflectors. Dissolved solids do not
generate reflections and are not relevant.
• A significant portion of the ultrasound energy generated by the transducer must reach the sonic reflectors. The ultrasonic transducer must be acoustically coupled to the outside of a pipe (using grease or RTV couplant) and the pipe must permit ultrasound to pass without significant attenuation. Most pipes constructed of solid, homogenous materials meet this qualification. Pipes that cause application difficulty include concrete pressure pipes, woodstave pipes, Teflon® -lined pipes and fiberglass reinforced pipes.
• The pipe must be completely filled with liquid when measurements are made. The DFX microprocessor assumes that the pipe is completely full when it calculates flow rate. Use on partially-filled pipes may result in inaccurate readings.
• Minimal installation time: the DFX may be installed and fully operational within minutes. For most homogeneous pipe
materials, there is no need to break into pipelines.
• Minimal material costs: clamp-on sensor eliminates the need for in-line flanges, pipe fittings, strainers or filters.
• Reduced down-time: installation may be performed on full pipes and active systems. There is no need to shut down the process for installation or maintenance.
• Lower maintenance costs: with no moving parts, there is nothing on the DFX to wear down.
The ModMAG® M3000 Electromagnetic flow meter is virtually unaffected by density, temperature, pressure and viscosity changes, making it an accurate and reliable long-term metering solution.
The FLUXUS F501 clamp-on ultrasonic flow meter for water is FLEXIM’s solution for many metering applications found in the water and wastewater sector and adjacent industries.
Contactless flow measurement for open channels and part filled pipes
The Dynasonics® DXN Portable Hybrid Ultrasonic flow meter is a powerful tool used for troubleshooting flow issues, whether you want to quickly verify the flow reading of another meter or to data log flow system values over an extended period of time.
