How to judge whether the IC card smart water meter needs to change the battery?

How to identify whether the IC card smart water meter needs to change the battery: 1. The electronic flash on the water meter does not flash the meter number in the local area, and the water meter sounds an alarm, indicating that the water meter battery is dead, and the water meter battery needs to be replaced. 2. When the water meter is used up, the water meter does not close the valve, causing water to flow out of the water meter. In this case, the battery of the water meter is dead. 3 It is found that the water meter count is not accurate. It may be that the water meter battery is dead, or the IC card smart water meter is broken. 4. Low-voltage detection: When the battery voltage is lower than 3.8v, the motor valve is closed, and the under-voltage and closed valve flash. It is necessary to install a new battery to reuse the IC card water meter. How to replace the water meter battery: 1. Open the lead seal of the battery box, remove the screws on the cover, and take out the battery. The battery box is at the bottom of the meter. 2. Press the snap ring, unplug the connector, and disconnect the battery snap ring. The water meter uses two 3V lithium batteries, two CR14505E type in series, and the battery and the water meter are connected by a buckle. 3. The battery can be purchased from Taobao, just search for CR14505E, the price is about 30-40 yuan. 4. After purchasing a new battery, pay attention to whether the positive and negative electrodes are the same as the original battery, and the connection line is important. If it is correct, insert the water meter buckle into the snap ring. How long is the battery life of the smart water meter? The average water meter manufacturer promises that the battery life of the smart meter is 3-6 years, but how does this figure come from? In the daily use of the smart water meter, the concentrated consumption of electricity is important There are the following aspects: battery self-discharge consumption, valve switch consumption, magnetic card communication consumption, liquid crystal flash consumption. At present, the constant current of the water meter module is below 3uA, and the total energy consumption in 6 years is about 970mA (the valve switching flow is about 80mA/9s). This is just a theoretical value, there is no unestimable problem. Assuming that the pipe network is under pressure (0.4mpa), the current of the on-off valve is generally required to be greater than 90mA. And the total capacity of the battery is not practical value, generally the best battery capacity is 80% of the battery. With the application to the later stage, the internal resistance increases, and the power consumption also increases. Lithium batteries generally used by manufacturers have a capacity of 2000mAh, and the actual available power is about 1200-1300mAh. Depending on the quality of the water meter and the difference in user usage, there is a big difference. It is more common in 3-6 years. Smart water meters have improved our water consumption. It not only saves us manpower and saves water bills, but also provides us with water and payment convenience, which is also beneficial to our water conservation. It is the battery needed by the water meter. The battery is power consumption. No matter what kind of battery, there will be no power. This is about the power consumption of the battery. If the battery is not power, it must be converted in advance. There are many types of water meters, and we are optimistic that our water meters can be converted to batteries in a fixed way. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Analysis of misunderstandings about mobile phone battery charging