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1. How to charge for hot water for college students in Guangzhou, Guangdong
The charging method for hot water for college students in Guangzhou, Guangdong is usually based on time or water consumption through smart IC card technology.
1. Charging by Time In this charging mode, when students use hot water, the smart IC card will record the time of hot water usage.
. Students need to swipe their card before starting to use hot water, the system will start timing, swipe the card again after use, the button system will stop timing, and the corresponding fees will be deducted based on the usage time. This charging method is simple, intuitive, easy to manage and operate.Secondly, charging based on the amount of water used by the brother. Another charging method is to charge based on the actual amount of water used.
. The smart IC card system will be equipped with a flow meter to measure the actual water consumption of students during the use of hot water. Students also need to swipe their cards at the beginning and end, but the system will deduct the corresponding fees based on the data from the flow meter. This charging method is more accurate and can more accurately reflect students water usage situation. It is worth noting that whether charging based on time or water usage, smart IC card technology can achieve water-saving effects. By accurately measuring and billing, students can become more aware of the importance of water conservation and take water-saving measures in their daily lives. In addition, this digital water-saving management system also helps improve the efficiency of water resource utilization in schools and reduce water bill expenses. Overall, the charging methods for hot wate
2. Why is the installation position of the water flow meter 10 times the pipe diameter before and 5 times the pipe diameter after, and what is the calculation basis ..
The first 10 times the pipe diameter and the last 5 times the pipe diameter refer to two pipe bends that are closed at the front and back of the measuring point, and the two bends are in the same plane. The length of the straight pipe section between the two is equal to 15 pipe diameters. Except for volumetric flow meters, common flow rates usually require this requirement (the straight pipe section required for differential pressure instruments is relatively long), and this requirement is mainly obtained through experiments. The purpose is to eliminate the adverse effects of rotational flow and disturbed fluid caused by bends on the measurement accuracy of the flowmeter through a certain straight pipe section, in order to achieve the best measurement effect. If it is a valve in front of the flowmeter, a longer straight pipe section is required.
3. Measurement range of large-diameter electromagnetic flowmeter
The measurement range of large-diameter electromagnetic flowmeter is mainly determined by the diameter size, flow rate range, and accuracy level. The diameter range of conventional products is usually between DN300 and DN3000, and some special models can be extended to DN4000.
. 1. Core measurement range diameter range: Standard products cover DN300 to DN3000 (i.e. 300mm to 3000mm), meeti
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