BS EN ISO 6974-1. Natural gas. Determination of composition and associated uncertainty by gas chromatography. Part 1: General guidelines and calculation of composition
BS EN ISO 6974-1 天然气 用气相色谱法测定成分和相关不确定度 第1部分:一般指南和成分计算

2010-04-06

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 2: Measuring-system characteristics and statistics for processing of data. (ISO 6974-2:2001)
天然气.用气相色谱法测定规定不确定度的成分.第2部分:数据处理用测量系统特性和统计学 （ISO 6974-2-2001）

2003-01-17

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 1: Guidelines for tailored analysis. (ISO 6974-1:2000)
天然气.用气相色谱法测定规定不确定度的成分.第1部分:定制分析指南 （ISO 6974-1-2000）

2003-01-17

천연가스 — 가스크로마토그래피에 의한 조성 및 관련 불확도 측정 — 제2부: 불확도 계산
天然气.用气相色谱法测定成分和相关不确定度.第2部分:不确定度计算

2022-12-23

Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 2: Uncertainty calculations
天然气——气相色谱法测定成分和相关不确定度第2部分:不确定度计算

2012-05-15

天然气 用气相色谱法测定组成和计算相关不确定度 第2部分：不确定度计算
Natural gas—Determination of composition and associated uncertainty by gas chromatography—Part 2: Uncertainty calculations

2020-09-29

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using three capillary columns (ISO 6974-6:2002)
天然气用气相色谱法测定规定不确定度的成分第6部分:用三根毛细管柱测定氢、氦、氧、氮、二氧化碳和C1至C8碳氢化合物

2006-05-03

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 3: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columns. (ISO 6974-3:2000)
天然气.用气相色谱法测定规定不确定度的成分.第3部分:用两个填充柱测定氢、氦、氧、氮、二氧化碳和C8以下的碳氢化合物 （ISO 6974-3-2000）

2003-01-17

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 5: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line process application using three columns. (ISO 6974-5:2000)
天然气.用气相色谱法测定具有规定不确定度的成分.第5部分:用三个色谱柱测定实验室和在线工艺应用中的氮、二氧化碳和C1至C5和C6+碳氢化合物 （ISO 6974-5-2000）

2003-01-17

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns. (ISO 6974-4:2000)
天然气.用气相色谱法测定规定不确定度的成分.第4部分:实验室和在线测量系统用双柱测定氮、二氧化碳和C1至C5和C6+碳氢化合物 （ISO 6974-4-2000）

2003-01-17

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C<(Index)1> to C<(Index)8> hydrocarbons using three capillary columns (ISO 6974-6:2002)
天然气.用气相色谱法测定规定不确定度的成分.第6部分:用三根毛细管柱测定氢、氦、氧、氮、二氧化碳和C<（指数）1>至C<（指数）8>碳氢化合物（ISO 6974-6-2002）；德文版EN ISO 6974-6:2005

2005-08-01

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen, carbon dioxide and C<(Index)1> to C<(Index)5> and C<(Index)6+> hydrocarbons for a laboratory and on-line measuring system using two columns (ISO 6974-4:2000)
天然气.用气相色谱法测定具有规定不确定度的成分.第4部分:实验室和在线测量系统用双柱测定氮 二氧化碳和C<（指数）1>至C<（指数）5>和C<（指数）6+>碳氢化合物（ISO 6974-4:2000）；德文版

2002-06-01