Portable Ultrasonic Flow Meter is mostly used to measure the flow rate of homogeneous fluids, with a very little percentage of suspended solids and possibly without gas bubbles. The Ultrasonic Flow Meter measures flow rate by calculating the spreading time of an ultrasonic wave in a liquid, going upstream and downstream into a full pipe. The Ultrasonic Flow Meter is composed of one or more couples of ultrasonic transducers acoustically coupled to the external pipe’s wall. The Portable Ultrasonic Flow Meter gives signals to interfacing with the process or the control systems.