An ultrasonic flowmeter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. The ultrasonic flowmeters measure the difference of the transit time of ultrasonic pulses propagating in and against flow direction. This time difference is a measure for the average velocity of the fluid along the path of the ultrasonic beam. By using the absolute transit times both the averaged fluid velocity and the speed of sound can be calculated. In this short clip, Endress+Hauser illustrates how the Ultrasonic Flow Measuring Principle works. Watch this short clip to learn more.