Ultrasonic flow meters are used everywhere to measure liquids and gases accurately, noncontact in a variety of industries. Ultrasonic flow meters utilize ultrasonic waves to quantify the velocity of a liquid to provide accurate measurements without touching the material to be quantified.
Ultrasonic flow meters use less power, are maintenance-free, and operate well where sanitation and invasive measurement is required over the traditional mechanical flow meters. How Ultrasonic Flow Meters Work Ultrasonic flow meters work on the principle of transmission of high-frequency sound waves through a fluid.
There are two sensors that are placed in the direction of the fluid flow. Both of them send and receive ultrasonic pulses and, based on these, calculate the travel time of the downstream and upstream flows.
The travel time difference is calculated to find the velocity of the fluid, and this is then converted into flow rate. There are two general types of ultrasonic flow meters: transit-time and Doppler flow meters.