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What are the Civilian Three Meters?

What are the Civilian Three Meters? gas meter, water meter, Water meter, electricity meter, gas meter:

I. What are the Civilian Three Meters?

The civilian water meter, electric meter, and gas meter (hereinafter referred to as the "Civilian Three Meters") are measurement instruments that are directly used for trade settlement with water supply, electricity supply, and gas supply departments. They are classified as mandatory inspection measuring instruments, affecting countless households, and their measurement accuracy is closely related to the interests of the public. To protect the legitimate rights and interests of the public, the state has stipulated that they must undergo "initial mandatory verification, limited use, and periodic replacement upon expiration."

(1) Water Meters

Water meters mostly refer to drinking water meters, which are measurement instruments used to continuously measure, record, and display the volume of water flowing through a measuring sensor under specified conditions. They are primarily used to measure the total volume of drinkable cold water in water supply pipelines.

Water meters can be classified based on their use into civilian water meters and industrial water meters. They can also be categorized by working temperature into cold water meters and hot water meters. Among them, cold water meters can be further divided into two temperature grades: T30 and T50, based on working temperature

(2) Electric Meters

Electric meters, also known as energy meters, are instruments used to measure electrical energy. They are widely used in daily life and in agricultural and industrial production. Common types of electric meters can be divided into electromechanical AC energy meters and electronic AC energy meters. Smart energy meters not only utilize electronic integrated circuit technology but also feature high measurement accuracy, intelligent billing, energy memory, low balance alarms, and remote information transmission, providing significant advantages in both performance and operational functionality.

They can be categorized based on their indicators:

Pulse Indicator Light: Red; it is off when no electricity is used at home and flashes when electricity is being consumed. The greater the power consumption, the faster the flashing frequency.
Tripping Indicator Light: Yellow; it is usually off but lights up when the load switch is turned off.

(3) Gas Meters

Gas meters are gas measurement instruments used to measure the volume of gas flowing through a closed pipeline. They primarily adopt a volumetric measurement and monetary settlement model for the measurement and management of the gas used.

Gas meters can be classified by medium into natural gas, liquefied petroleum gas, artificial gas, etc. They can also be categorized by working principle into diaphragm gas meters, ultrasonic gas meters, and so on. Diaphragm gas meters are typically divided into two parts: the main meter and an additional device (LCD display). The main meter part uses a mechanical counter to display the cumulative gas consumption measured by the gas meter, while the prepaid management part belongs to the auxiliary device of the natural gas meter.

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