Найдено: 11
Overview ISO 6974-2:2012, "Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 2: Uncertainty calculations", defines the procedure to calculate the meas…
Overview - ISO 6974-5:2014 (Natural gas, isothermal GC method) ISO 6974-5:2014 specifies an isothermal gas chromatographic (GC) method for the quantitative determination of nitrogen (N2), carbon diox…
Overview ISO 6974-1:2012 - Natural gas: Determination of composition and associated uncertainty by gas chromatography - Part 1 provides general guidelines and data‑processing procedures for convertin…
Overview ISO 6974-6:2002 specifies a laboratory gas chromatographic method for the quantitative determination of helium, hydrogen, oxygen, nitrogen, carbon dioxide and C1–C8 hydrocarbons in natural g…
Overview ISO 6974-3:2018 - "Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 3: Precision and bias" defines the expected precision and gives guidance…
Overview ISO 6974-4:2000 specifies a gas‑chromatographic method for determining the composition of natural gas with defined uncertainty, suitable for both laboratory and on‑line measuring systems. Th…
1 Scope This part of ISO 6974 describes the process required to determine the uncertainty associated with the mole fraction for each component from a natural gas analysis in accordance with ISO 6974-…
1 Scope This part of this International Standard describes a gas chromatographic method for the quantitative determination of the content of nitrogen, carbon dioxide and C 1 to C 5 hydrocarbons indiv…