Introduction Accurate, non-contact water velocity measurement is vital for hydrological monitoring, open-channel irrigation, wastewater management, and flood warning systems. Traditional contact-based flow meters often fail during high-flow conditions or in sediment-rich, debris-heavy environments. Non-contact 24GHz radar velocity meters offer a reliable, maintenance-free solution by emitting microwave signals to sense surface water velocity without touching the medium. When choosing between the BT7320 and BT7350 radar velocity meters, the primary decision comes down to your installation requirement: Do you need a portable, handheld device for