国产丝袜视频在线,日本与大黑人xxxx,欧美激情免费a视频,男生看片网站,国产精品入口在线看麻豆,欧美另类亚洲一区二区,玖玖精品视频

Prepaid IC card water meter is a widely used smart water meter, its error is smaller than ordinary water meter, the water meter in use is also very strict compliance with the following items.

Shanhu meter is the production of prepaid water meter, IC card water meter, intelligent water meter and other water meters, prepaid water meter price is not high. But it has a relatively high degree of intelligence, and a delicate shape of the "automatic shutdown" situation to ensure the quality of water. Prepaid IC card water meter more humane management, if open the water valve does not continue to supply water, then we need to buy water immediately. The IC card ultrasonic water meter is composed of temperature sensor, flow sensor and calculator. The temperature sensor measures the temperature of the water, and the flow sensor measures the amount of water flowing through the pipe through the time difference. These two data are collected and sent to the integrating calculator to calculate the amount of water used, stored and displayed. After buying and then using the water, the data is automatically entered into the meter when the user swipes the card; When the purchase volume reaches the set value, the water meter automatically closes the valve and stops the water supply.

泰安市山虎儀表科技有限公司