Selection of Diaphragm gas meter

A diaphragm civil gas meter is an instrument for accurate measurement of pipeline gas flow, which is widely used in petroleum, chemical, electric power, industrial boiler, and other gas metering fields, applicable to natural gas, city gas, propane, butane, ethylene, air, nitrogen, and other gases. This series of the meter has the characteristics of high accuracy, good repeatability, and no high requirement for straight pipe sections before and after the meter. Next, let's take a look at the selection of the Diaphragm gas meter. Here are some answers.

Here is the content list:

l Correct selection of Diaphragm gas meter capacity specifications.

l Other issues that should be noted when selecting a Diaphragm gas meter.

Correct selection of Diaphragm gas meter capacity specifications.

The maximum flow rate of a Diaphragm gas meter that can meet the requirements of the standard technical specifications is called the capacity of the Diaphragm gas meter. Manufacturers produce gas meters with different capacity specifications according to the standard according to various requirements of users. Generally speaking, it is impossible to produce a single specification gas meter that can adapt to various user requirements. For example, the J1.6C gas meter whose nominal flow rate is 1.6m3/h and the maximum rated flow rate is 2.5m3/h. Such a gas meter cannot meet the requirements of a large enterprise or hotel. A gas meter over capacity, beyond the permitted conditions of use, cannot ensure the realization of its function.

The selection of capacity should be decided according to the maximum consumption of gas. The normal gas meter capacity should be selected within the range of 20% to 70% of the maximum rated flow rate of the diaphragm gas meter with an aluminum case. Calculation of the maximum capacity should not only see immediate but also take into account the future development of gas use. Not only to meet the immediate gas stove, and water heater gas consumption requirements but also to consider the possibility of the use of gas ovens, gas wall ovens, etc. Calculation of gas consumption should also be based on the following points.

Different gas has different calorific values. That is, the heat released by the complete combustion of one cubic meter is different. If the calorific value of gas is high, the amount of gas consumed will be low. If the calorific value of gas is low, it will take more gas to boil the same pot of water to the boiling point. Therefore, a slightly larger Diaphragm gas meter model should be considered when selecting a model. There are three main types of gas currently used in China: artificial gas, natural gas, and liquefied petroleum gas. Since the origin and manufacture of gas differ from place to place, its components are also different, so its calorific value is also different.

Other issues that should be noted when selecting a Diaphragm gas meter.

The selection of gas meter should also pay attention to the use of high and low pressure, domestic gas pipeline in the end-user is often about 3kPa. If the operating pressure of the pipeline exceeds the operating pressure of the Diaphragm gas meter, other types of gas meters should be considered.

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