Features: 1 Low cost 2 High accuracy, better than ¡¨¤1% 3 NIST standard 4 Noninvasive. No pipe disturbance. No moving parts. No pressure drop. No maintenance 5 Easy and economical installation. No pipe cutting, no tole drilling 6 Wide measurement range, 0.03~105ft/s(0.01~32m/s) 7 Wide pipe size range, 1/2"~240"(DN15~DN6000mm) 8 Suitable for all commonly used pipe materials 9 Signal quality tracking and self-adjusting capabilities automatically match transducer to pipe material 10 Velocity, volumetric and totalized flow 11 Easy to use and set up. Self-explanatory menu-driving programming 12 Rich input and output functionalities 13 Weather-resistant enclosure 14 Ideal for both clean and opaque liquid flow measurements about 7KG/set