ISO 6145-11:2005 气体分析 标定用混合气体的制备 动态容量法 第11部分：校正的方法

标准编号：ISO 6145-11:2005

中文名称：气体分析 标定用混合气体的制备 动态容量法 第11部分：校正的方法

英文名称：Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods — Part 11: Electrochemical generation

发布日期：2005-10

标准范围

This part of ISO 6145 specifies a method for the preparation of calibration gas mixtures by using electrochemical generation of a calibration component and introduction into a complementary gas flow. By alteration of the gas flow or the charge passed through the cell electrolyte, it is possible to change the composition of the gas mixture. The relative expanded uncertainty of the calibration gas content, U, obtained by multiplying the relative combined standard uncertainties by a coverage factor, k = 2, is not greater than b %The method described in this part of ISO 6145 is intended to be applied to the preparation of calibration ges mixtures in the volume fraction ranges (0,1 to 250) × 10.NOTE 1Gases that can be produced by electrochemical generation are oxygen (O2), hydrogen (H2), hydrogen cyanide (HCN), hydrogen sulfide (H2S), chlorine (Cl2), bromine (Br2), chlorine dioxide (CIO2), ammonia (NH3), nitric oxide (NO), nitrogen (N2), carbon dioxide (CO2), phosphine (PH3), arsine (AsH3) and o/one (O3).NOTE 2The merits of the method are that a stable calibration gas mixture can be quickly prepared within minutes.NOTE 3Gas blending systems based on electrochemical generation and thermal mass flow controllers, with the facility of computerization and automatic control, are commercially available. An example is given in Annex A.

标准预览图