How to replace the battery of Tianjin Zhongtian Card Water Meter

Steps of battery replacement for Tianjin Zhongtian Card Water Meter:

There is a round cover on the water meter, which needs to be pried out along the edge with a blade. When it is opened, it is a big cross screw. When you open it with a screwdriver, you can see the battery.

Tianjin, referred to as Jingu and Jinmen for short, is a provincial-level administrative region, municipality directly under the Central Government, national central city and megacity in People's Republic of China (PRC), a gateway to the opening up of northern China approved by the State Council, and a shipping center, logistics center and modern manufacturing base in northern China.

Tianjin is the largest port city in the north of China, an international comprehensive transportation hub, an international consumption center city, a national logistics hub, a national advanced manufacturing R&D base, a northern international shipping core area, a financial innovation operation demonstration area, a pioneering area for reform and opening up, the first batch of coastal open cities, and an Asia-Pacific regional marine instrument testing and evaluation center.

By 2020, there will be 16 districts in the city, with a total area of 1 1966.45 square kilometers and a permanent population of138.66 million.

Tianjin is located in North China, northeast of North China Plain, downstream of Haihe River Basin, bordering Bohai Sea in the east, Yanshan Mountain in the north and Beijing in the west. Tianjin is the main node of the China-Mongolia-Russia Economic Corridor, the strategic fulcrum of the Maritime Silk Road, the intersection of the Belt and Road, and the nearest eastern starting point of the Eurasian Continental Bridge. Located at the confluence and estuary of the five tributaries of Haihe River, namely South Canal, Ziya River, Daqinghe River, Yongding River and North Canal, it is known as "the lower tip of Jiujiang" and "the river is in a hurry".

Tianjin has been a land and water hub for transporting grain from south to north since the middle of Tang Dynasty.

The rulers set up "Zhigu Village" in Zhigu; Haijin Town, founded in Yuan Dynasty, is a military center and a water transportation center.

In the second year of Yongle in Ming Dynasty (1404), the city was officially built, which is the only city in ancient China with an exact time record.

After Tianjin was turned into a trading port in the tenth year of Xianfeng in Qing Dynasty (1860), western powers set up concessions here one after another, and Tianjin became the frontier of the opening of northern China in modern times and the base of China's Westernization Movement.

After more than 600 years, Tianjin has created a unique urban landscape that combines Chinese and Western cultures and is compatible with ancient and modern times.