ДСТУ EN ISO 14912:2022 Аналіз газів. Перетворювання даних про склад газових сумішей (EN ISO 14912:2006, IDT; ISO 14912:2003, IDT)

ДСТУ EN ISO 14912:2022
(EN ISO 14912:2006, IDT; ISO 14912:2003, IDT)

Аналіз газів. Перетворювання даних про склад газових сумішей

 
   
 
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Introduction

1 Scope

2 Terms and definitions

3 Symbols and units

4 Basic principles

4.1 Expression of gas mixture composition

4.2 Conversion between different quantities

4.3 Conversion between different state conditions

5 Main procedures

5.1 Conversion between different quantities of composition

5.2 Conversion to reference conditions

6 Practical implementation

6.1 Conversion between quantities of composition

6.2 Conversion of single analyte contents

6.3 Conversion of complete compositions

6.4 Conversion between state conditions

6.5 Simple approximations applicable to conversion

7 Input quantities and their uncertainties

7.1 Pure gas data

7.2 Gas mixture data

7.3 Rough uncertainty estimates

8 Conversion uncertainty

8.1 General considerations

8.2 Conversion of single analyte contents

8.3 Conversion of complete compositions

8.4 Uncertainty calculation using numerical differentiation

8.5 Variances and covariances of input composition data

9 Application recommendations

Annex A (normative) Assessment of state conditions

Annex B (normative) Summation relations for the expression of mixture properties

Annex C (informative) Mixture component data

Annex D (informative) Examples

Annex E (informative) Computer implementation of recommended methods

Bibliography