1. The first is the power supply problem, because the electromagnetic flowmeter to external power supply, resulting in outdoor installation is not convenient, but also limited the use of electromagnetic flowmeter in the suburbs. In addition, the electromagnetic flow meter does not come with a power supply, once the power is cut off, it will cause the loss of the flow meter data used to settle the water meter, so that the measurement and calculation of the missing water amount during the power failure period also put forward new problems, the general water supply enterprises and users of the general water supply enterprises and users are case to discuss and deal with, increasing a lot of work. If the electromagnetic flowmeter can come with its own power supply, it can fundamentally solve this problem, and it will also promote its application in the settlement water meter, and the battery-powered electromagnetic flowmeter will solve this problem well.
2. Lightning protection problem: whether it is the settlement water meter or the electromagnetic flow meter of regional measurement, in the relatively empty suburbs, especially in the thunderstorm weather coverage area, the lightning protection of the electromagnetic flow meter is a relatively severe test. After strictly grounding and power supply protection, the probability of electromagnetic flowmeters installed in open areas being struck by lightning is still very high. It is usually used to build houses on electromagnetic flowmeter Wells, do ground nets and install lightning rods to prevent lightning, so the effect is very obvious, but it also needs to solve the problem of land use rights and coordinated planning with the surrounding environment, and the procedure is more complicated.
3. The transmission problem of the signal problem, the electromagnetic flowmeter for the regional pipe network can provide a certain decision-making information for the urban water supply dispatch, the current electromagnetic flowmeter requires the water supply enterprise to develop or select other data transmission systems in order to achieve real-time monitoring of the data. This not only increases the cost of investment, but also increases the difficulty of operation management. If the electromagnetic flowmeter can complete the automatic conversion and wireless transmission of the signal in the instrument itself, reduce the compatibility or mutual conversion of data collection and other troubles, it will provide convenience for the use of enterprises, and will also increase the application of the electromagnetic flowmeter.
