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GB/T 40789-2021Gas analysis - Online automated measuring systems for content of carbon monoxide, carbon dioxide and oxygen - Determination of performance characteristics (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 11, 2021

Implementation date

May 1, 2022

Scope

GB/T 40789-2021 (Gas analysis - Online automated measuring systems for content of carbon monoxide, carbon dioxide and oxygen - Determination of performance characteristics) is available as an English-translated PDF.

GB/T 40789-2021 is the Chinese standard "Gas analysis - Online automated measuring systems for content of carbon monoxide, carbon dioxide and oxygen - Determination of performance characteristics".

Its scope clause reads: This document defines the terms, definitions, symbols and abbreviations of the online automatic measurement system (AMS), gives an introduction to AMS, describes Describes the selection method of AMS, establishes the performance characteristics and judgment standards of AMS, quality assurance and quality control procedures, and measurement reports What should be included.

This document is applicable to the extraction formula and principle for the determination of carbon monoxide (CO) content, carbon dioxide (CO2) content and oxygen (O2) content in gas. Positional (non-removable) AMS. Its clauses include terms and definitions.

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Document preview — GB/T 40789-2021

National Standard of the People's Republic of China

Classification: G 86

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
4.1 Symbol
4.2 Abbreviations
5 Introduction to automatic measurement system
5.1 Sampling and sample gas processing system
5.2 Analyzer
6 Performance characteristics and judgment indicators
6.1 Performance characteristics judgment index
6.2 Determination of performance characteristics
7 Selection of measurement system
7.1 Selection of measurement system
7.2 Selection of sampling points
8 Quality assurance and quality control procedures
8.1 General
8.2 Verification and frequency of verification during the period
8.3 Calibration, verification and measurement uncertainty
9 Measurement report
Appendix A (informative) Structural differences between this document and ISO 12039.2019
Appendix B (informative) Technical differences between this document and ISO 12039.2019 and their reasons
Appendix D (informative) Infrared absorption method (CO content and CO2 content)
Appendix E (informative) Extractable oxygen measurement technology
Appendix F (Informative) In-situ measurement of CO content, CO2 content and O2 content
Appendix G (Normative) Working Gas
Appendix H (Normative) Performance characteristics measurement method
Appendix K (Normative) Conversion of CO content, CO2 content and O2 content
References

1 Scope

This document defines the terms, definitions, symbols and abbreviations of the online automatic measurement system (AMS), gives an introduction to AMS, describes

Describes the selection method of AMS, establishes the performance characteristics and judgment standards of AMS, quality assurance and quality control procedures, and measurement reports

What should be included.

This document is applicable to the extraction formula and principle for the determination of carbon monoxide (CO) content, carbon dioxide (CO2) content and oxygen (O2) content in gas.

Positional (non-removable) AMS.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

GB/T 14850 Gas Analysis Vocabulary (GB/T 14850-2020, ISO 7504.2015, IDT)

GB/T 36090 Gas Analysis Online Automatic Measurement System Quality Assurance Guide

Conversion of GB/T 40870 gas analysis mixed gas composition data (GB/T 40870-2021, ISO 14912..2003,

IDT)

3 Terms and definitions

The following terms and definitions defined in GB/T 14850 and GB/T 36090 apply to this document.

3.1 Parallel measurements

The reference method is used to measure two points on the same plane in the same pipeline that are relatively close together with the AMS whose performance characteristics are to be determined.

Quantities, provide paired measurement values.

3.2 Measurand to be measured

The specific amount to be measured.

[Source. ISO /IEC Guide98-3.2008, B.2.9, with modification]

3.3 Referencematerial

Pure substances or mixtures with known concentrations and within the specified range, or equipment with known characteristics.

Note. Commonly used gas standard materials/standard samples, gas chambers, gratings or filters.

[Source. ISO 14385-1.2014, 3.20]

GB/T 41328 | GB/T 38527 | GB/T 37244 | GB/T 31986 | GB/T 31058 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 91 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 7504.2015 · ISO 14912

Cited by

GB/T 47039-2026Hydrogen metallurgy - Technical requirements for hydrogen-rich systems in blast furnace smelting

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