Tianjin Xun'er Technology Co., Ltd
sallen@sure365.com.cn
13821593578
Building 1-10, Huading New Area, Haitai Innovation 6th Road, Huayuan Industrial Zone (Outer Ring Road), Xiqing District, Tianjin City
Electromagnetic Water Meter Solution
In the field of municipal water supply, pipeline leakage is a major challenge faced by various water companies. Traditional leakage monitoring methods such as listening method and radar method cannot meet the real-time leakage monitoring of large-scale pipelines due to their long time consumption and high labor costs. With the development of technology,DMAThe development of partition measurement technology has made nighttime small flow analysis an important means of leak monitoring.DMAThe technology of partition metering relies heavily on the accuracy of basic flow data, therefore, the selection of measuring instruments installed at each node of the pipeline network is crucial. At present, the mainstream meters used for measuring water volume in pipeline networks on the market mainly include electromagnetic water meters, ultrasonic water meters, mechanical water meters, and other types of meters. According to their different working principles, each has its own application scenarios and usage characteristics. A brief introduction is as follows:
Name of measuring instrument |
advantage |
shortcoming |
Suitable for |
Rotary mechanical watch |
Low price, affordable |
High water quality requirements are required, otherwise foreign objects may cause wheel jamming, and over time, shaft wear may lead to a decrease in accuracy |
Household water meter with clean water quality |
Horizontal spiral wing mechanical watch |
High initial flow rate, not suitable for small flow metering |
Water usage points with clean water quality, high flow rate, and minimal variation |
|
Vertical spiral wing mechanical watch |
Range ratio higher than rotor type water meter |
Due to the influence of internal structure, there is significant pressure loss and energy consumption at high flow rates, making it unsuitable for high flow situations |
Low flow rate scenarios |
Compound mechanical watch |
There is a maximum range ratio in mechanical water meters |
Magnetic transmission has experienced demagnetization, and the design of the conversion valve results in high pressure loss, high failure rate of the conversion valve, and inconvenient maintenance |
Large caliber and small flow water points with low pressure loss requirements |
ultrasonic water meter |
Small pressure loss, relatively low price among smart meters |
Fatigue of the transducer leads to a decrease in accuracy over time, causing fear of bubbles and vibration |
Measurement sites with low long-term accuracy requirements |
Electromagnetic Water Meter |
The widest range ratio, no pressure loss, and no loss of accuracy due to usage time |
relatively high price |
DMA partition metering, settlement for large users |
Battery powered electromagnetic flowmeter |
No pressure loss, no loss of accuracy due to usage time |
Narrow range ratio, high power consumption, generally usedIt takes about a year to replace the battery |
Source water measurement, and on-site inability to connect to electricity |
By comparing the above table, we can see that electromagnetic water meters have unique advantages when used for small flow measurement at night. Electromagnetic water meters have a wide range, low network loss, no movable parts inside, and their accuracy is not affected by the length of use. In particular, they have the function of reporting data on an hourly basis, which can better meet the requirements of low flow monitoring at night. Therefore, electromagnetic water meters are widely used in the field of leakage monitoring in major water companies.