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GB/T 14850-2020Gas analysis - Vocabulary (English PDF)

气体分析词汇

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

March 31, 2020

Implementation date

February 1, 2021

Scope

GB/T 14850-2020 is the English-translated version of 气体分析词汇.

GB/T 14850-2020 is the Chinese standard "Gas analysis - Vocabulary". Its scope clause reads: This standard defines the terms related to gas analysis, mainly focusing on the calibration mixed gas phase used in gas analysis and gas measurement Related terms.

Terms that are only relevant to specific applications are not included. Its clauses include terms related to general concepts.

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Document preview — GB/T 14850-2020

National Standard of the People's Republic of China

ICS: 71.100.20
Classification: G 86

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

1 Scope
2 Normative references
3 Terms related to general concepts
3.1 Homogeneity
3.2 Stability
3.3 Component
3.4 Content
3.5 Composition

1 Scope

This standard defines the terms related to gas analysis, mainly focusing on the calibration mixed gas phase used in gas analysis and gas measurement

Related terms. Terms that are only relevant to specific applications are not included.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article

Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.

ISO /IEC Guide98-3..2008 Uncertainty of measurement Part 3. Guide for the representation of uncertainty of measurement measurement-Part 3. Guidetotheexpressionofuncertaintyinmeasurement (GUM..1995)]

ISO /IEC Guide99..2007 International Metrology Vocabulary Basic General Metrology Terms and Definition Technical Regulations cabularyofmetrology-Basicandgeneralconceptsandassociatedterms (VIM)]

ISO 10715..1997 Natural Gas Sampling Guidelines

3 Terms related to general concepts

Terms used in the field of gas analysis defined by ISO /IEC Guide98-3 or ISO /IEC Guide99 are listed in Appendix A.

3.1 Homogeneity

The state in which all components (3.3) of the mixed gas are uniformly distributed in the space occupied by them.

3.2 Stability

Under the specified conditions, the composition of the mixed gas (3.5) is within the specified time range [maximum storage period (7.5) (see Appendix A)].

Attributes that are within the specified uncertainty limits.

3.3 Component

A chemical substance that exists in a simple substance or mixture in a specified physical state.

3.4 Content

The volume fraction (3.5.1.1), mass fraction (3.5.1.2), volume fraction of a substance (3.3) in pure gas or mixed gas (3.5.1.3), quantity concentration (3.5.2.1), mass concentration (3.5.2.2), volume concentration (3.5.2.3).

Note. For more detailed information on this term, see ISO 14912 [7].

Example 1. The hydrogen content in the mixed gas of hydrogen and nitrogen is expressed as x (H2) = 0.1 in the form of the mass fraction of the substance.

Example 2. In the state of p = 101.325kPa and T = 288.15K, the content of sulfur dioxide in the air is expressed by the mass concentration (3.5.2.2) as.

gamma (SO2) = 1mg/m3.

3.5 Composition

The name and content (3.4) of each component (3.3) constituting a specific mixed gas.

GB/T 6052 | GB/T 8979 | GB/T 8982 | GB/T 14851 | GB/T 14851 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 34 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 10715

Cited by

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