ultrasonic water meter(water meter;digital flow meter) Low power ultrasonic water meter is designed according to Europe alliance EN1434 standard and ultrasonic time-difference principle.It can instead of other water meter andInstall in any angle. Ultrasonic time-difference principle Measuring water or other liquid. Accuracy: 1%, 2%. Repeatability: 0.5% Measuring period: 3S, 1 31S(selection). Battery can work 6-10years, or two line power Lowest measuring velocity of liquid 0.01m/s No pressure lost and moving parts, no nursing for 10 years Pipe length designing according to the normal water meter IP68, can working under water lower than 2 meters. Foundry in mould, no reveal DN15-1000m Ceramic sensor apply to -40 160 Over look type, normal type, separate type