『Fluxus F721 Ultrasonic Flow Meter Specifications: Permanent Non-Invasive Process Stream Sizing』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
Fluxus F721 Ultrasonic Flow Meter Specifications: Permanent Non-Invasive Process Stream Sizing
Quick Answer
The Fluxus F721 is a permanent clamp-on ultrasonic flow meter for non-invasive process stream sizing on liquid lines. It measures flow from outside the pipe so there is no process shutdown and no wetted parts. Typical accuracy is about 1 percent of reading when the installation follows straight run rules and pipe data is entered correctly. Send your pipe size in DN, fluid type, temperature in °C, pressure in bar, and flow range for a specific quote.
Why Process Engineers Check the Fluxus F721 for Non-Invasive Sizing
Process stream sizing needs repeatable flow data without cutting a live line. The Fluxus F721 ultrasonic flow meter specifications support permanent non-invasive installation on metal and plastic pipes. The transducers mount on the outside of the pipe with stainless steel or polymer fixtures. You do not cut the pipe. You do not install a spool piece. You do not stop production.
In practice, this matters for lines that run continuously. A chemical plant in Thailand needed to check a DN150 solvent line during production. A clamp-on meter was installed in less than half a day without hot work. The plant compared flow data against the pump curve the same week.
Here is the thing. Non-invasive does not mean low accuracy by default. The measurement quality depends on pipe data, transducer placement, and flow profile. If you enter the correct pipe wall thickness and liner data, the transmitter can calculate volume flow reliably.
Key Specifications for Sizing and Selection
The Fluxus F721 uses the transit-time difference principle. Two transducers send ultrasonic signals through the pipe wall and the moving liquid. The signal travel time changes with flow velocity. The transmitter converts this into volume flow.
Typical specification points for liquid process streams include the following.
- Pipe size range: DN10 to DN6000 depending on transducer type and pipe condition
- Flow velocity: 0.01 to 25 m/s typical
- Accuracy: ±1 percent of reading under good flow profile and proper setup
- Repeatability: 0.15 percent of reading typical
- Medium temperature: -40 °C to 200 °C depending on transducer and coupling pad
- Outputs: 4-20 mA HART, pulse, and Modbus RTU options
- Power supply: 100-240 V AC or 24 V DC
- Enclosure: IP66 for field mounting
Most engineers skip this part but it matters. The pipe surface must be clean and free of loose paint or scale before transducer mounting. The pipe wall should be homogeneous. Thin spots, lamination, or heavy internal scale will weaken the signal.
Liquid viscosity is usually below 100 cP for reliable transit-time measurement. For higher viscosity, a positive displacement or Coriolis meter may be better. For demineralized water with conductivity below 20 µS/cm, clamp-on ultrasonic can still work because it does not rely on liquid conductivity.
Permanent Non-Invasive Process Stream Sizing in Real Plants
We see this type of meter specified in water and wastewater plants, chemical dosing skids, food and beverage process lines, marine cooling loops, and oil and gas water injection systems. The clamp-on design works where a spool piece is too expensive or too invasive.
For desalination plants, a seawater flow meter for a feed line can be installed
Last year a customer in Vietnam asked us about a DN200 cooling water line with a short straight run. We checked his drawing and found the meter had only 8D upstream. We recommended moving the transducers to a longer run or using a dual path option. This is a common field issue.
Because the transducers are external, retrofitting on existing lines is simpler than cutting into a pipe. But the straight run rule still applies. A typical recommendation is 10D upstream and 5D downstream from a bend, valve, or pump.
Model Pairing and Output Integration
For process control, the 4-20 mA HART signal connects directly to a PLC or DCS. Pulse output works for totalizing. Modbus RTU is useful for remote monitoring. If the plant has a hazardous area classification, confirm the ATEX Zone 1 or Zone 2 option before ordering. The transmitter and transducers may have different approvals.
Silver Automation Instruments can supply the full package with transducers, transmitter, mounting fixtures, coupling compound, and startup support. We also supply Coriolis mass flow meters, electromagnetic flow meters, and vortex flow meters for applications where clamp-on ultrasonic is not ideal.
If you have a slurry, heavy aeration, or very low conductivity liquid, check with us before choosing a clamp-on ultrasonic meter. Some liquids need an electromagnetic flow meter instead.
How to Get a Quote
Send your pipe size in DN, pipe material, wall thickness, fluid type, pressure in bar, temperature in °C, and flow range in m3/h or kg/h. Also tell us the straight run length before and after the planned mounting point. This helps us check the Fluxus F721 ultrasonic flow meter specifications against your process stream sizing need.
Contact Silver Automation Instruments at Tel: +86-25-68650347 or WhatsApp: +86-25-52155837. WeChat: +86 15365082610. We reply to industrial customers and distributors in Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
FAQ
What is the typical accuracy of the Fluxus F721?
Typical accuracy is ±1 percent of reading when the flow profile is fully developed. Repeatability is around 0.15 percent of reading. Actual accuracy depends on pipe data, straight run, and transducer installation.
Can the Fluxus F721 measure on lined pipe?
Yes, some liners are supported if the liner material and thickness are entered into the transmitter. Common liners include rubber, PTFE, and glass. Heavy internal scale or bonding failures will hurt signal quality.
What pipe sizes does the F721 cover?
Pipe sizes from DN10 up to DN6000 are possible depending on the transducer set. Large pipes usually need a higher power transducer and careful positioning.
Which outputs are available for process control?
4-20 mA HART is the standard output for many process loops. Pulse and Modbus RTU are also available. Specify your PLC or DCS input before ordering.
What should I send for a fast quote?
Send pipe diameter in DN, wall thickness, material, fluid, temperature °C, pressure bar, flow range, and available straight run. We will match a configuration and provide a quote for the full package.
Hot News
Related AD
