
The non-intrusive ultrasonic flowmeter for liquids optimizes your industrial processes and saves energy. Ultrasonic flow measurement technology reduces costs and improves plant safety. Thanks to its precise flow measurement capability, this device offers a reliable solution for real-time monitoring and process optimization.
Download the brochure to find out how to accurately measure steam, air or liquid flow with ultrasonic flowmeters.
Fuji Electric's high-tech non-intrusive ultrasonic flowmeter has been developed for the precise measurement of liquid flow and velocity.
They are quick and easy to install on pipes of all materials and diameters.
This range of industrial flowmeters revolutionizes flow measurement and can be used over a wide range of temperatures and pressures.
Output signals transmit information to your control or monitoring systems.
The use of transit time technology contributes to the exceptional accuracy of this ultrasonic flowmeter, enabling flow measurement of liquids containing suspended particles or gas bubbles.
Fuji Electric ultrasonic flowmeters use the transit time difference method (different from the Doppler principle) to determine flow rates.
The two ultrasonic sensors are installed on the outside of the pipe.
Ultrasonic waves propagate diagonally across the cross-section from the upstream transducer to the downstream transducer, and then from the downstream transducer to the upstream transducer.
Unlike Doppler ultrasonic flowmeters, which measure the frequency of ultrasonic waves reflected by moving particles, transit time ultrasonic flowmeters operate differently. These flowmeters use the variation in wave propagation time. An ultrasonic wave is sent upstream and downstream of the fluid flow. In one case, the wave is "carried" by the fluid, in the other, it is "braked". It therefore takes a different time to travel from one ultrasonic transducer to the other.
This difference in transit time is proportional to the flow velocity. This method enables fluid flow to be determined with a high degree of accuracy.
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The non-intrusive clamp-on ultrasonic flowmeter offers many advantages. It is used in many industrial processes to monitor and control processes and equipment.
This ultrasonic flowmeter is suitable for continuous measurement of non-particulate liquids inindustrial automation and energy audits.
Flow measurement is crucial for optimizing industrial processes and guaranteeing maximum efficiency.
Our measuring instruments work even on difficult applications.
The signal strength of the transducers adapts automatically to the quality of the pipe and the liquid being measured.
So you can measure with confidence whatever your needs, even if your pipes are corroded.
We offer several versions and types of ultrasonic flowmeters, including single and dual sensor models, to help you choose the version best suited to your needs:
Need some help or want to save even more time?
To meet your needs, we offer on-site commissioning services, including installation, configuration and staff training.
Models | ![]() | ![]() | ![]() | ![]() | |
Ultrasonic flowmeter for liquids FLR M-FLOW PW | Ultrasonic flowmeter for liquids FSV TIME DELTA-C | Ultrasonic flowmeter for liquids FSV-L TIME DELTA-C ETENDU | Portable ultrasonic flowmeter for liquids FSC | ||
Mounting method | Non-intrusive | ||||
APPLICATIONS | |||||
Clean, bubble-free liquids and gases | ++ | ++ | ++ | ++ | |
Waste water | + | + | + | + | |
Viscous liquids | + | + | + | + | |
Oils | + | + | + | + | |
Corrosive liquids | ++ | ++ | ++ | ++ | |
Non-conductive liquids | ++ | ++ | ++ | ++ | |
Low flow rates | + | + | + | + | |
Pulsed flows | (1) | (1) | (1) | (1) | |
High temperature | + | + | + | + | |
High pressure | ++ | ++ | ++ | ++ | |
MAIN CHARACTERISTICS OF ULTRASONIC FLOWMETERS | |||||
Protection | IP65 | IP66 (IP67 optional) | IP67 | IP64 | |
Pipe diameter for flanged ultrasonic flowmeters | NA | NA | NA | NA | |
Pipe diameter for non-intrusive ultrasonic flowmeter | Ultrasonic sensor FSSA 25 to 225 mm (inside diameter) / -40 to +100°c | ||||
Ultrasonic sensor FSSC 50 to 1200 mm (inside diameter) / -20 to +120°c | |||||
Ultrasonic sensor FSSD 13 to 300 mm (inside diameter) / -40 to +100°c | |||||
Ultrasonic sensor FSSE 200 to 6000 mm (inside diameter) / -40 to +80°c | |||||
Ultrasonic sensor FSSH 50 to 400 mm (inside diameter) / -40 to +200°c | |||||
Maximum pressure | No pressure limit | ||||
Fluid temperature | Depending on the ultrasonic transducer used | ||||
Flow velocity scale | 0 to ±0.3...10 m/s | 0 to ±0.3...32 m/s | |||
Measurement accuracy | ±1.5 % | ±1.0% Depending on diameter and speed | |||
Power supply | 100-240 Vac 50/60 Hz or 20-30 Vdc | 100-240 Vac 50/60 Hz | 12-hour battery 12 Vac or 100-240 Vac |
na: Not applicable
(1): Conditionally applicable
+: Applicable
++: Recommended