Classification of water meters according to metering principles

The types of water meters can be divided according to the principle of measurement

a) Mechanical water meter: the measuring sensor, calculator and indicating device are all water meters with mechanical principle and structure, mainly including speed type water meter (to measure water flow speed and indirectly measure water consumption, reasoning method) and volumetric type water meter (to measure actual fluid volume, direct method). Mechanical water meter is the most traditional water meter, the biggest disadvantage is the need for manual meter reading. With the improvement of human cost and the need of water fine management, it will be gradually replaced by intelligent water meter in the future.

b) Smart water meter 1.0: a mechanical water meter equipped with electronic devices, that is, a mechanical water meter with complete structure as the base meter, on which an electronic device is added. The common types include prepaid IC card water meter, photoelectric direct reading remote water meter and wireless remote water meter (LORA / Nb lot).Smart water meter 1.0 does not need manual meter reading. It is the general trend for intelligent water meter to replace traditional water meter. Among them, policy support + standard unified Internet of things NB lot wireless remote water meter will occupy the dominant position.

c) Smart water meter 2.0: Based on the principle of electricity and electronics, common types include ultrasonic water meter, electromagnetic remote water meter, jet water meter, etc. Electronic water meter uses electromagnetic, ultrasonic and other advanced flow measurement technology to achieve the purpose of accurate measurement of water quantity. Compared with mechanical water meter, it has higher accuracy and lower initial flow. The disadvantage is that it has higher price and is more suitable for industrial process measurement and other application fields with higher accuracy demand.

d) Smart water meter 3.0: at present, it is in the stage of commercial research and development. In addition to the basic functions of the existing Smart water meter, it can also measure the comprehensive water parameters of the pipe network, and provide water supply enterprises with online integrated and cost-effective big data sensing devices for the pipe network (including: water quantity, water pressure, water pressure) Quality, leakage, water temperature and other parameters), providing massive data, so that the water supply enterprises can carry out the urgent new business as soon as possible, such as the comprehensive and accurate control of pipe network pressure and water quantity, energy saving and consumption reduction, online water quality monitoring and early warning and alarm at the end of pipe network, monitoring and accurate positioning of pipe network leakage status.