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 and it has other characters: High accuracy, better reliable, no moving part, no need to set data. Install 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 DN15-1000mm Ceramic sensor apply to -40~160 Over look type, normal type, separate type