Non-intrusive ultrasonic liquid flow meters optimize your industrial processes and save energy. Ultrasonic flow measurement technology reduces your costs and improves the safety of your installation.
Fuji Electric's high technology non-intrusive ultrasonic flow meters have been developed for high accuracy measurement of liquid flow and velocity. These flow meters are quick and easy to install on pipes of all materials and diameters. These industrial measuring instruments can be used to measure the flow rate over a wide temperature range regardless of pressure. The output signals transmit the information to your control or monitoring systems.
The Fuji Electric ultrasonic flow meter uses the transit time difference method to measure the velocity of a fluid.
Two transducers working at high frequency are installed outside the pipe.
The ultrasonic wave propagates into a stream of flowing liquid through the pipe wall over the cross sectional area in the diagonal of the pipe from the upstream transducer to the downstream transducer, and then from the downstream ultrasound transducer to the upstream second transducer.
In one case, the ultrasonic pulses are "carried" by the fluid in the same direction, and the reflected signal beam is "slowed down" in the against direction.
It, therefore, the ultrasonic signal takes a different time to pass from one ultrasonic sensor to the other. This instrument operate by alternately transmitting and receiving the sound waves at modulated frequency.
This difference of sound wave corresponding to the transit time or travel time is directly proportional to the flow velocity and the fluid flow rate measurement.
The acoustic properties of each liquid are different and must be set in the parameters of the ultrasonic flow meter to insure high accuracy.
Compare to doppler flow meters which use the sound reflecting particles to measure the velocity on dirty liquids, the transit time ultrasonic flow meters use the time difference of sound signals to measure the velocity.
Ultrasonic transit time flow meters are unaffected by changes in temperature or pressure.
This makes them ideal for use in applications where these factors might affect the accuracy of measurements taken using other types of flow meters.
When other types of ultrasonic flow meters are intrusive, wetted and required to cut the pipe, the difference is that the transit time ultrasonic flow meters clamp-on are non-intrusive and with no moving parts.
The non-intrusive ultrasonic clamp-on flowmeter has many advantages.
It is used in many industrial processes for monitoring and control of processes and equipment.
These ultrasonic meters are suitable for the measurement of the velocity of a fluid on non-particulate liquids in industrial automation and for energy audits.
Our ultrasonic flow measuring instruments measure any liquids at high accuracy even in difficult applications with a maximum process temperature of 200 °C. It cannot measure gas flow rate.
The ultrasonic signals of the sensors automatically adapt the energy beam to the quality of the pipe and to the liquid being measured by the clamp on meters.
So you can measure with confidence whatever your needs are, even if your piping is corroded.
To meet your needs, we offer on-site commissioning services including installation, configuration and training of your staff.
|Low cost ultrasonic flow meter|
|Ultrasonic flow meter for liquids|
Advanced ultrasonic flow meter for liquids
|Clean liquids without air bubbles||++||++||++||++|
|Low flow rates||+||+||+||+|
|MAIN CHARACTERISTICS OF ULTRASONIC FLOWMETERS|
|Protection||IP65||IP66 (IP67 option)||IP67||IP64|
for non-intrusive ultrasonic flowmeter
|Ultrasonic sensor FSSA|
25 to 225 mm (outside diameter) / -40 to +100°c
|Ultrasonic sensor FSSC|
50 to 1200 mm (outside diameter) / -20 to +120°c
|Ultrasonic sensor FSSD|
13 to 300 mm (outside diameter) / -40 to +100°c
|Ultrasonic sensor FSSE|
200 to 6000 mm (outside diameter) / -40 to +80°c
|Ultrasonic sensor FSSH|
50 to 400 mm (outside diameter) / -40 to +200°c
|Max. pressure||No pressure limit|
|Fluid temperature||Depending on the ultrasonic sensor used|
|Liquid flow scale||0 à ±0.3…10 m/s||0 à ±0.3…32 m/s|
|Measurement accuracy||±1.5 %||±1.0%|
Depends on diameter and speed
|Power supply||100-240 Vca 50/60 Hz ou 20-30 Vcc||100-240 Vca 50/60 Hz||12 hour battery|
12 Vca or 100-240 Vca
na : Non applicable
(1) : Applicable under conditions
+ : Applicable
++ : Recommended