The OPTISONIC 6400 portable ultrasonic flowmeter for liquids measures the flow velocity, the current volumetric flow and a variety of diagnostic values. The flowmeter combines portability, simplicity, and fast liquid measurement with the precision and reliability of ultrasonic time of flight sensor technology. Its ease of use and flexibility make the OPTISONIC 6400 an ideal solution for flow measurement in a variety of applications in virtually any industry. The OPTISONIC 6400 is compact and easy to install. Users simply attach the innovative sensor rail to the pipe and plug in the cables to the handheld OPTISONIC 6400 electronics, set up a few parameters, and begin reading instantaneous flow results. The device stores the readings in the integrated memory for data logging. Data can also be transferred via a USB stick to external evaluation systems for further review.