GB/T 5832.2-2008 in English

《GB/T 5832.2-2008气体中微量水分的测定 第2部分：露点法》由TC206（全国气体标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
ＧＢ／Ｔ５８３２《气体中微量水分的测定》分为多个部分，目前暂分为３部分,本部分代替ＧＢ／Ｔ５８３２．２―１９８６《气体中微量水分的测定　露点法》。本部分规定了通过测定气体露点来测定气体中微量水分的方法。本部分适用于0 ℃~-120℃气体露点的测定。本部分与ＧＢ／Ｔ５８３２．２―１９８６相比主要差异如下：
―――扩大了适用范围（１９８６年版的第１章；本部分的第１章）；
―――扩大了检测范围（１９８６年版的第１章；本部分的第１章）；
―――增加了规范性引用文件一章（本部分的第２章）；
―――增加术语和定义（１９８６年版的２．１；本部分的第３章）；
―――增加仪器类型及基本要求（１９８６年版的第３章；本部分的第５章）；
―――修改采样要求（１９８６年版的第４章；本部分的６．１）；
―――修改精密度要求（１９８６年版的第８章；本部分的第８章）；
―――修改露点―体积分数换算表、删除露点―绝对微量水分换算表及公式附录（１９８６ 年版的附录Ａ；本部分的附录Ａ）。

1 Scope

This Part specifies the method for determination of moisture in gases by determination of dew point.
This Part is applicable to the determination of moisture in hydrogen, oxygen, nitrogen, helium, neon, argon, krypton, xenon, nitrous oxide, sulphur hexafluoride, etc., as well as mixture gas of such gases. This Part is not applicable to the gases which are condensate before moisture condensation , and which may react with moisture.
This Part is applicable to the determination of gas dew point within 0 ℃ to -120 ℃.

2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this Part. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 3723 Sampling of chemical products for industrial use — Safety in sampling (GB/T 3723-1999, idt ISO 3165:1976)
GB/T 5832.1 Determination of moisture in gases — Part 1: Electrolytic method
GB/T 6681 General rules for sampling gaseous chemical products

3 Terms and Definitions
For the purposes of this Part, the following terms and definitions apply.