GB/T 22723-2008 in English

《GB/T 22723-2008天然气能量的测定》由TC244（全国天然气标准化技术委员会）归口，主管部门为国家标准化管理委员会。
本标准修改采用ISO 15112:2007《天然气―――能量测定》。
本标准根据ISO 15112:2007重新起草。
本标准提供了采用测量或计算的方式对天然气进行能量测定的方法，并描述了必需采用的相关技术和措施。
本标准适用于从民用气到高压气输送的任何气体计量站。

Scope

This standard provides a method for energy determination of natural gas by means of measurement or calculation, and describes the relevant technologies and measures that must be adopted. The calculation of energy is based on the measurement of the quantity (mass or volume) and calorific value (obtained by measurement or calculation) of the delivered natural gas (hereinafter referred to as "gas") respectively. This standard also gives a general method of energy measurement uncertainty estimation. This standard only deals with systems currently in use. This standard applies to any gas metering station from civil gas to high-pressure gas transmission. This standard does not exclude the application of new technology, as long as the technology is proved to be equal to or better than the technology involved in this standard. Gas metering systems are not the subject of this standard.