The maximum capacity of IC card water meter is100t, so it is impossible to input more than100t. For example, if the LCD display and the card amount add up to more than 100, you can't enter, but less than 100.
The battery of Hua Xu water meter is dead. It costs 100 yuan to change the battery in the property or water meter factory. Users can change it by themselves. First, find the battery location. The model of 3.6V lithium battery for water meters in Hua Xu is ER 14505M with plug-in. Just plug in a new battery and check the ic card.
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The appearance of IC card water meter is basically similar to that of general water meter, and the installation process is basically the same. The use of IC card water meter is very simple. From the user's point of view, it is to insert the IC card into the water meter. The working process of IC card water meter is generally as follows: insert the IC card containing the amount into the IC card reader in the water meter, and after the microcomputer module recognizes and downloads the amount, the valve opens, and the user can use the water normally.
When the user uses water, the water quantity collecting device starts to collect water quantity, which is converted into the required electrical signal for the microcomputer module to measure and displayed on the LCD display module. When the user's water consumption drops to a certain value, the microcomputer module gives a sound alarm to remind the user to pay with the card. If the water consumption exceeds the amount, the microcomputer module will automatically close the electric control valve and cut off the water supply. Until the user inserts the payment IC card and starts to open the valve for water supply again.
Baidu encyclopedia-intelligent IC card water meter