Name: UNI EN ISO 6145-7 : 2011
Brand: UNI

UNI EN ISO 6145-7 : 2011

Superseded

GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC VOLUMETRIC METHODS - PART 7: THERMAL MASS-FLOW CONTROLLERS

Superseded date

12-09-2022

Published date

01-01-2011

Publisher

Ente Nazionale Italiano di Unificazione (UNI)

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Set-up
6 Preparation of gas mixtures
7 Calculations
Annex A (informative) - Pre-mixed gases for preparation
of mixtures of high dilution
Annex B (informative) - Practical hints
Annex C (informative) - Calculation of uncertainties
Bibliography

Describes a method for continuous production of calibration gas mixtures, containing two or more components, from pure gases or other gas mixtures by use of commercially available thermal mass-flow controllers.

DocumentType	Standard
PublisherName	Ente Nazionale Italiano di Unificazione (UNI)
Status	Superseded
SupersededBy	UNI EN ISO 6145-7:2019

Standards	Relationship
EN ISO 6145-7:2010	Identical
ISO 6145-7:2009	Identical

ISO 14511:2001	Measurement of fluid flow in closed conduits Thermal mass flowmeters
ISO 6143:2001	Gas analysis — Comparison methods for determining and checking the composition of calibration gas mixtures
ISO 6142:2001	Gas analysis Preparation of calibration gas mixtures Gravimetric method
ISO 7504:2015	Gas analysis Vocabulary
ISO 6145-1:2003	Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 1: Methods of calibration
ISO/IEC Guide 98-3:2008	Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)