GSO ISO 4677-1:2008

Atmospheres for conditioning and testing-Determination of relative humidity-Part 1 : Aspirated psychrometer method

GSO ISO 4677-1:2008 发布历史

GSO ISO 4677-1:2008由GSO 发布于 2008-02-20。

GSO ISO 4677-1:2008在国际标准分类中归属于: 19.020 试验条件和规程综合。

GSO ISO 4677-1:2008 的最新版本是哪一版？

最新版本是 GSO ISO 4677-1:2008 。

GSO ISO 4677-1:2008的历代版本如下：

• 2008年 GSO ISO 4677-1:2008

1.1 Scope This part of ISO 4677 specifies a method for the determination of the relative humidity of atmospheres for conditioning and testing having temperatures within the range from 5 to 80 OC using a psychrometer ventilated by aspiration. The property is determined with an uncertainty either not exceeding + 3 % r.h. or not exceeding rt: 2 % r. h., depending on the uncertainty in the value obtained for the wet-bulb temperature depression and on whether or not the dry-bulb temperature exceeds 40 OC. 1.2 Field of application The method is applicable to the determination of the relative humidity of the Standard atmospheres specified in ISO 554 and of most test atmospheres. it is restricted to wet-bulb temperatures not lower than 1 OC, dry-bulb temperatures not higher than 80 OC, and pressures not differing from Standard atmospheric pressure by more than 30 %. The method should not be used if the atmosphere is heavily contaminated with gases, vapours or dust.

标准号

GSO ISO 4677-1:2008

发布

2008年

发布单位

GSO

当前最新

GSO ISO 4677-1:2008

 

 

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