FLEXIM FLUXUS F731 Non-Invasive High Accuracy Ultrasonic Flowmeter with Dual-Channel Operation
The FLUXUS F731 is a stationary ultrasonic flowmeter that measures liquid flow from outside the pipe. It is designed for permanent installation and offers high accuracy and reliability without process interruption.
Using matched ultrasonic transducers and sophisticated digital signal processing, the F731 provides stable measurements at both very low and high flow velocities. Features such as Synchronised Channel Averaging and integrated flow disturbance correction improve performance in non-ideal piping configurations. The meter supports single or dual-channel operation and can calculate volume, mass, and, with temperature inputs, thermal energy. It is available in aluminum or stainless-steel housings with various certification options.
| Specification | Details |
|---|---|
| Type | Non-intrusive clamp-on ultrasonic flowmeter |
| Principle | Transit-time difference |
| Channels | Up to 2 |
| Velocity Range | 0.01 to 25 m/s |
| Pipe Diameter Range | 6 to 6500 mm |
| System Accuracy | ±0.3 % of reading ±0.005 m/s |
| Point Accuracy | ±1 % of reading ±0.005 m/s |
| Repeatability | 0.15 % of reading ±0.005 m/s |
| Power | 100–240 VAC or 11–32 VDC |
| Analog Outputs | 4–20 mA (active/passive), HART option |
| Digital Outputs | Pulse / frequency / binary |
| Protection / Approvals | IP66; FM Class I Div 2 / ATEX/IECEx Zone 2 versions available |
| Bidirectional | Yes |
Applied in chemical processing, oil and gas facilities, water treatment, pharmaceutical production, semiconductor manufacturing, and building energy management for continuous liquid flow monitoring.
Process interruptions for meter installation, sensor fouling, or limited low-flow capability are common with traditional meters. The F731’s external mounting and advanced processing reduce these concerns while maintaining measurement independence from fluid and pipe variations within specification.
An effective replacement for older clamp-on ultrasonic meters or intrusive devices where non-invasive installation and dual-channel capability are desired.
We provide authentic Flexim FLUXUS F731 systems and practical support for sizing, transducer selection, and integration into existing control systems.
Standard lead time is 6-8 weeks.
Submit details on pipe size, fluid, temperature range, hazardous-area requirements, and preferred communication interfaces for a customized offer.
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