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The difference between electromagnetic water meter and ultrasonic water meter
点击次数:393  更新时间:2021-09-02  【打印此页】  【关闭
Water is the source of all life. Facing the increasingly scarce global water resources, how to effectively strengthen the monitoring of water resources, improve water use efficiency, reduce water leakage, and provide more refined services for water management has become a new challenge and opportunity for the water meter industry. Based on this, the smart water meter, a flow measurement device specially designed for the water industry, has developed rapidly, and various smart water meters emerge in endlessly. Ultrasonic water meter is an electronic water meter that integrates contemporary computer technology, electronic technology, and control technology.


Speaking of smart electronic water meters, we have to mention electromagnetic water meters and ultrasonic water meters, both of which are currently popular water metering instruments. What are the differences and common points between the two? Why is electromagnetic water meter more expensive than ultrasonic water meter?


Both are ideal alternatives to traditional mechanical water meters. Compared with traditional mechanical water meters, both electromagnetic water meters and ultrasonic water meters have the advantages of low starting flow rate, wide range ratio, high measurement accuracy and stable operation. There are no moving parts and flow-blocking elements inside the two, which are not affected by impurities in the water and have a long service life. The output communication function is complete, meeting all kinds of communication and wireless networking requirements. It has excellent small flow detection capabilities, can solve many traditional water meter problems, is more suitable for water fee gradient charging, DMA zone metering, and is more suitable for water resource saving and rational use, and has a broad market and application prospects. Electromagnetic water meter manufacturers


The limitations of the ultrasonic water meter limit the field application. In principle, the ultrasonic water meter is a fully electronic water meter manufactured with the principle of ultrasonic time difference and industrial-grade electronic components. Because the ultrasonic water meter checks the flow by reflection, it is easily interfered by the ultrasonic noise mixed in by bubbles, fouling, pumps and other sound sources, which affects the measurement accuracy and has poor anti-interference performance. Straight pipes are strictly required to be 20D in the front and 50D in the back, otherwise the dispersion is poor and the measurement accuracy is poor. In addition, fouling of the measuring pipe will seriously affect the accuracy of the measurement and cause significant measurement errors.


Electromagnetic water meters solve the three major problems of ultrasonic water meters


The electromagnetic water meter is made according to the Faraday electromagnetic induction principle. The principle determines that the electromagnetic water meter is less affected by bubbles and fouling. At the same time, the necking process adopted by the electromagnetic water meter does not require a straight pipe section, which expands the scope of application. In addition, the high-precision electromagnetic flowmeter specially designed sensor excitation system and high-performance lithium battery power supply system, and adopts ultra-micro power consumption processor, has the characteristics of full digital signal processing, stable measurement, high accuracy, and strong anti-interference ability. .


The ultrasonic water meter is designed for individual water applications such as water intake, pipe network distribution, metering and charging, and irrigation. It can measure a flow rate of 5mm/s with a low starting flow rate and a high turndown ratio (high R value) as high as 1:400. Under the premise of not sacrificing measurement accuracy, low-power operation is guaranteed, and this product is battery-powered, with a service life of more than 30 years, and a continuous working time of more than 8 years. At the same time, the battery-powered electromagnetic water meter can be installed anywhere without the need for external power supply. In addition, it also has intelligent information and high measurement performance, easy to install and save user investment.