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1. Power supply issue: Since electromagnetic flowmeters require an external power supply, this makes installation outdoors inconvenient and limits their use in suburban water supply systems. Furthermore, electromagnetic flowmeters do not have their own power supply; once the power is cut off, the data from these flowmeters, which are used as meters for billing water usage, will be lost. This poses new challenges in measuring and estimating the amount of water that was not counted during the period of power outage. Typically, water supply companies and customers have to resolve such issues on a case-by-case basis, which adds a significant amount of work. If electromagnetic flowmeters can have their own power supply, this problem can be solved fundamentally, which will also facilitate their adoption in water metering systems for billing purposes. 2. Signal transmission issues: Electromagnetic flowmeters used in regional water supply networks can provide valuable decision-making information for urban water supply management; therefore, we want the electromagnetic flow signals, whether used for user billing or for monitoring the regional network, to be continuous and real-time. Current electromagnetic flowmeters require water supply companies to develop additional systems or adopt other data transmission methods in order to enable real-time monitoring of data. This not only increases cost expenses but also raises the difficulties in operational management. If electromagnetic flowmeters can perform automatic signal conversion and wireless transmission within the instrument itself, thereby reducing issues related to data acquisition compatibility and conversion, it will facilitate their use by enterprises and also provide additional advantages for the wider adoption of electromagnetic flowmeters. 3. Lightning protection issues: Whether it is a meter for measuring water consumption at the point of use or an electromagnetic flowmeter used for regional measurement, in relatively open suburban areas, especially in Guangdong where thunderstorms affect large areas, lightning protection for electromagnetic flowmeters presents a significant challenge. Even with proper grounding and power protection in place, electromagnetic flowmeters installed in open areas still have a high probability of being struck by lightning. The simplest and most effective approach is to improve the lightning protection capabilities of the flow meter itself; if a fundamental solution is not possible, then the internal circuits should be protected separately, so that even in the event of damage caused by lightning strikes, the cost of replacement can be reduced.