What device measures the velocity of a liquid using ultrasound waves?

The device that measures the velocity of a liquid using ultrasound waves is the ultrasonic flow meter. This instrument operates by emitting ultrasonic sound waves and analyzing the changes in frequency and phase of the reflected waves as they interact with the moving liquid. When the liquid flows, it affects the speed at which the sound waves travel upstream and downstream. By calculating the difference in transit times between the two paths, the meter can determine the flow velocity of the liquid.

This technology is particularly useful in various applications due to its non-invasive nature, as it does not require any contact with the liquid, allowing for accurate flow measurements even in difficult conditions. Understanding how this device works highlights its importance in process industries where precise flow measurements are essential for monitoring and controlling various operations.