Handheld ultrasonic flow meter: Attach the magnetic clip-on sensor to the outer wall of the pipe to complete flow measurement without damaging the pipeline or halting production. Portable clamp-on design: The digital ultrasonic flow meter features precision measurement with an accuracy of better than +/- 1%, and linearity and repeatability accuracy of 0.5% and 0.2%, suitable for measuring flow rates in both plastic and metallic pipes. Compact and lightweight: The portable digital ultrasonic flow meter measures 210 x 90 x 30 mm and weighs only 0.5 kg, making it easy to handle and transport. Versatile applications: This liquid flow meter is suitable for testing flow rates of various liquids including seawater, water, alcohol, cold and hot water, industrial sewage, lubricating oil, diesel, fuel oil, and chemical liquids in PVC, stainless steel, cast iron, and FRP pipes. Clear LCD display: The LCD shows column metering, instantaneous volume, flow rate, and signal strength. Function keys are customizable for measuring both positive and negative flow as well as net flow.