BS ISO 12963:2017+A1:2020:2021 Edition

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Gas analysis. Comparison methods for the determination of the composition of gas mixtures based on one- and two-point calibration

Published By	Publication Date	Number of Pages
BSI	2021	34

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Categories: 71.040.40 - Chemical analysis, BSI

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This document provides methods for

calibrating an instrument with one or two calibration gas mixtures,
determining the composition of a gas sample, and
evaluating the uncertainty of the composition of the gas sample in relation to the uncertainty of the composition of the calibration gases used and the contribution of the measurement process.

This document sets requirements to, and acceptance criteria for, the utilization of different measurement calibration designs with a limited (i.e. minimum) number of calibration gas mixtures used in calibration.

The methods in this document are described for amount-of-substance fractions, but are also applicable for other composition quantities (such as mass fractions, volume fractions or concentrations).

PDF Catalog

PDF Pages	PDF Title
2	National foreword
6	Foreword
7	Introduction
9	1 Scope 2 Normative references 3 Terms and definitions
10	4 Symbols 5 Abbreviated terms
11	6 Principle 6.1 General requirements
12	6.2 Calibration methods 7 Main procedure 7.1 Pre-requisites 7.2 Sequence of operations (overview)
13	7.3 Calibration and measurement designs 7.3.1 General
14	7.3.2 Single-point exact-match calibration (SPEM) 7.3.3 Single-point through origin calibration (SPO)
15	7.3.4 Two-point calibration with a blank (TPB) 7.3.5 Two-point calibration with bracketing (TPC)
16	7.3.6 Multipoint calibration (MPC) 8 Performance evaluation of the measuring system 8.1 General
18	8.2 Sources of performance evaluation data and alternative approach 8.2.1 Performance evaluation other than in-house
19	8.2.2 Alternative for performance evaluation 9 Quality assurance measures 9.1 Validation of the assumptions made 9.2 Drift/stability control of the measuring system
20	10 Report of results 10.1 Calibration gas certificates 10.2 Report of analysis
21	Annex A (normative) System-stability check required when using exact-match and bracketing designs
23	Annex B (normative) Statistics and sensitivity coefficients used in Clause 7
25	Annex C (normative) Alternative approach to assessing the nonlinearity contribution
27	Annex D (informative) Worked-out example
30	Annex E (informative) Using the designs without preceding system performance evaluation
32	Bibliography