Introduction to the Diaphragm gas meter

The diaphragm civil gas meter is a positive displacement natural gas flow meter used by utility companies for billing residential and light commercial applications. Its advantages are its proven technology, reliable measurement, and consistent quality. Next, we take a look at the Diaphragm gas meter.

Here is the content list:

• Diaphragm gas meters are mainly found in residential and light commercial buildings.

• How does the Diaphragm gas meter work?

Diaphragm gas meters are mainly found in residential and light commercial buildings.

The Diaphragm gas meter is one of the most common and oldest gas meters and the development of this device in the 19th century was crucial to the success of the gas industry. It created a reasonably priced way to charge end users for their energy usage. The Diaphragm gas meter is found mainly in residential and light commercial buildings and this type of meter measures the amount of gas consumed by the customer so that the gas distributor can charge for it. The Diaphragm gas meter is a positive displacement meter and is also known as a PD meter or volumetric meter. Gas flows into a known volume meter opening or chamber with an oscillating diaphragm. This section fills and empties the gas and the volumetric flow is determined each cycle. Diaphragm gas meters are relatively inexpensive and offer a low-cost way for utility companies to measure billing, they have a long service life. The moving parts of the diaphragm gas meter with an aluminum case require regular maintenance and the user should consider the cleanliness of the gas. This type of gas meter is typically used in smaller pipes and at relatively low flow rates. Although the volumetric flow rate of this meter is accurate, pressure and temperature compensation are required to achieve mass flow.

How does the Diaphragm gas meter work?

The Diaphragm gas meter shares the same principle as the old locomotive, relying on the pressure of the gas to do external work and drive the roller counter to count. How does it work? The cylinder and piston mechanism in a locomotive is simplified by replacing the cylinder with a "bellows" and the piston with a "membrane". The so-called "bellows" is just an empty box made of metal, with two halves put together and a soft, airtight film sandwiched between them. The middle part of the film is sandwiched by a metal sheet, a hard core that cannot be bent, but the surrounding film is so soft that the core can move from side to side inside the box. The film divides the space inside the box in two, each forming two 'air chambers' through which air can be fed or exhausted. When air is fed into the left chamber and exhausted from the right chamber, the pressure of the gas acts on the film, causing the hardcore to move to the right. Conversely, if gas is fed in on the right and out on the left, the hardcore moves to the left. So, if you think of the box as a cylinder and the membrane and hardcore as pistons, isn't this the same as a steam engine? In the Diaphragm gas meter, the same technology is used as in the steam engine, allowing the Diaphragm gas meter to continue moving when the membrane and hardcore move to the far left or far right. Specifically, two sets of bellows and membrane are used, both with their hard cores connected by rods to the same vertical shaft, which has two cranks, both of which are also 90 degrees apart, so that the movement of the two hard cores is half a step apart. When one of them moves to the head, the other one is exactly in the middle and never stops.

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