ISO 5725-1:1994
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Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions |
ISO 10715:1997
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Natural gas — Sampling guidelines |
ISO 6976:2016
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Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition |
ISO 6974-2:2012
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Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 2: Uncertainty calculations |
ISO 6974-4:2000
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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 10723:2012
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Natural gas Performance evaluation for analytical systems |
ISO 9300:2005
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Measurement of gas flow by means of critical flow Venturi nozzles |
ISO 12213-3:2006
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Natural gas Calculation of compression factor Part 3: Calculation using physical properties |
ISO 5725-3:1994
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Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate measures of the precision of a standard measurement method |
ISO 6974-3:2000
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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 5725-6:1994
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Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values |
ISO 5725-4:1994
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Accuracy (trueness and precision) of measurement methods and results Part 4: Basic methods for the determination of the trueness of a standard measurement method |
ISO 13686:2013
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Natural gas Quality designation |
ISO 12261:2016
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Aerospace — Screws, pan head, internal offset cruciform ribbed or unribbed drive, pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa — Dimensions |
EN 12405 : 2002
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GAS METERS - GAS-VOLUME ELECTRONIC CONVERSION DEVICES |
ISO/TR 5168:1998
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Measurement of fluid flow Evaluation of uncertainties |
ISO 3534-2:2006
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Statistics Vocabulary and symbols Part 2: Applied statistics |
ISO 14532:2014
|
Natural gas — Vocabulary |
ISO 13443:1996
|
Natural gas Standard reference conditions |
ISO 5167-1:2003
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Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements |
ISO 6142:2001
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Gas analysis Preparation of calibration gas mixtures Gravimetric method |
ISO 10790:2015
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Measurement of fluid flow in closed conduits Guidance to the selection, installation and use of Coriolis flowmeters (mass flow, density and volume flow measurements) |
ISO 5725-2:1994
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Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
ISO 3534-3:2013
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Statistics — Vocabulary and symbols — Part 3: Design of experiments |
EN 1359:2017
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Gas meters - Diaphragm gas meters |
ISO 14111:1997
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Natural gas — Guidelines to traceability in analysis |
ISO 6974-1:2012
|
Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 1: General guidelines and calculation of composition |
ISO 12213-1:2006
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Natural gas Calculation of compression factor Part 1: Introduction and guidelines |
ISO 7504:2015
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Gas analysis Vocabulary |
ISO 12213-2:2006
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Natural gas Calculation of compression factor Part 2: Calculation using molar-composition analysis |
ISO/TR 7871:1997
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Cumulative sum charts Guidance on quality control and data analysis using CUSUM techniques |
ISO 6974-5:2014
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Natural gas Determination of composition and associated uncertainty by gas chromatography Part 5: Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons |
EN 1776:2015
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Gas infrastructure - Gas measuring systems - Functional requirements |
ISO 3534-1:2006
|
Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability |