Know The Impactful Reasons Why Ultrasonic Flow Meters Work The Best


An ultrasonic flow meter determines the velocity of a fluid with ultrasound to calculate volumetric flow. This is why sound waves are generally measured at a frequency beyond the range of hearing. The ultrasound signal is transferred into a stream of flowing liquid with the help of wetted transducers that can make a direct connection with the liquid. Along with it, they can send ultrasound waves through the pipe wall. Even the clamp fixed on the ultrasonic flow meter comprises at least two ultrasonic sensors which get mounted externally to a pipe. Moreover, the flow rate depends upon the nature of the application.

Do you know how an ultrasound flow meter works?

The flowmeter usually operates by transmission and receiving the strong waves of ultrasound between the two transducers, which shall measure the transit time it requires for a sound to voyage between the two transducers in different directions. Even the current iteration of transit-time ultrasonic flowmeters shall be able to track fluid movements down to zero flow conditions.

These flowmeters can be applied to determine the velocity of liquids that enable ultrasonic waves to pass, which include water, molten sulphur, cryogenic liquids and chemicals. These industries prefer to use meters including oil and gas, wastewater, power, chemical, food and beverage.

One of the main reasons why ultrasonic transit-time clamp-on meters usually used in industrial flow measurement are accounted to be cost-friendly, smaller and accurate. This is why clamp-on transducers are usually used when piping isn’t disturbed. The meters cannot be damaged by caustic fluids if the waste products left in the line get eliminated.

Are you curious to know how an ultrasonic flow meter works? Read below an interesting read!

Acoustic sounds are involved in ultrasonic flow meters to measure the flow. There are two types of ultrasonic flow which generally measure the transit time travel and Doppler shift. The exact difference between the methods lies in how directional measurement is acquired. With the assistance of the time travel method, sound waves are being sent along diagonally to the flow and measurements shall be taken in both directions. Apart from it, even in the Doppler method, sound waves are projected along the flow path. Even the frequency of the return signal is measured.


Even the ultrasonic flow meter measures the flow of a liquid or gas by sending ultrasonic waves across the pipe. More importantly, an ultrasonic flow meter uses the acoustic method to measure flow. These vortex flow meter work through time travel and Doppler shift. 

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