Knowledge on measurement of diaphragm gas meters for residential use

1.What types of gas meters are there? What type of gas meter do we use at home?

Diaphragm gas meters, often called membrane meters, are commonly used by residents in three categories: mechanical diaphragm gas meters, IC card diaphragm gas meters, and wireless remote transmission diaphragm gas meters.

Mechanical diaphragm gas meters are the most basic household gas meters. These old-fashioned meters use a mechanical roller to count gas usage, incrementing the roller's count with each unit of gas used. Meter readers must visit households to read the meter and settle gas bills.

IC card diaphragm gas meters are a derivative of traditional mechanical meters. Compared to mechanical diaphragm gas meters, these smart gas meters feature an electronic display and a card insertion area. They use a prepaid model, requiring customers to purchase gas at an offline top-up machine before returning home. When the remaining gas level or meter charge falls below a set value, the display prompts customers to purchase gas or replace the battery.

Wireless remote transmission diaphragm gas meters are equipped with communication and remote transmission capabilities. Leveraging IoT technology, they automatically collect data, enabling remote meter reading, billing, top-up, and valve control, allowing people to pay and top up their gas bills without leaving their homes.

2.How do you check how much gas is used on a gas meter and how do you read the readings?

The black portion of the numbers on the gas meter represents integers, from left to right: ten thousand, thousand, hundred, tens, and units. The red portion represents the three decimal places. Once gas is used, the rightmost value in the red portion begins to change. Read the meter readings from left to right.

3.How long does a gas meter at home last?

Gas meters are compulsory inspection measuring instruments. In accordance with the requirements of relevant national laws and regulations, household gas meters are subject to the "first mandatory inspection, limited use, and rotation upon expiration" method. The service life of household gas meters using natural gas as the medium shall not exceed 10 years, and the service life of household gas meters using artificial gas, liquefied petroleum gas, etc. as the medium shall not exceed 6 years.

4.Do new gas meters really run faster?

1. Diaphragm gas meters must undergo mandatory inspection by a legally mandated metrology and calibration agency before installation and use. Only after passing the inspection in accordance with national metrology and calibration regulations can they be installed and used. Meters that pass the mandatory inspection will be affixed with a certificate of compliance.

2. Diaphragm gas meters are powered by gas flowing through them. The meter's dial rotates only when gas passes through the meter. Its fully anti-magnetic mechanical structure cannot be controlled remotely or via a chip on a sticker.

3. If the meter rotates even when not in use, it could be due to a leak in the pipes or gas-using equipment behind the meter, or if your home water heater is thermostatic and automatically activates to maintain the water temperature, similar to self-heating. 4. Usage and duration are the true factors affecting gas usage.

5. Diaphragm gas meters generally slow down over time.

6. The self-closing valve is a safety switch. It opens only when there is gas and pressure in the pipe. It automatically closes if the main valve is closed or the gas supply is cut off. This is unrelated to gas usage.

5.Gas meter maintenance knowledge

1. Gas meters are not waterproof. Water ingress can damage internal components, affecting metering and potentially causing gas leaks. Therefore, the area around the gas meter should be well ventilated and kept dry.

2. Like gas pipes, gas meters have a strong exterior but a fragile interior. Therefore, never hang objects on the gas meter, as this may loosen the joints and cause gas leaks.

3. If the gas meter becomes stained, gently wipe it with a damp cloth and detergent. Avoid directly rinsing with water, and never use corrosive liquids such as strong acids or bases.

4. When the display indicates a low battery, replace the battery immediately. If you notice any damage to the gas meter, or if the meter pointer stops moving, moves too slowly, or moves too fast, contact a gas company representative for assistance. Do not attempt to disassemble the meter without authorization.

5. Dust-proof tab: For plug-in gas meters, be sure to pull the tab open before inserting the card. Replace the tab after completing gas flow using the correct card insertion method. Nowadays, the card insertion port of the gas meter is generally equipped with a cover. The cover must be closed after each recharge to prevent oil smoke from entering and contacting the components inside the meter, which may cause oxidation and cause poor contact.