Analysis of natural gas. Validation methods for gaseous reference materials

in special cases

the particular requirements included can be used to demonstrate compliance with one or more but not all of the requirements of BS EN 868 Part 1

Annex B has been restructured to give additional requirements for meters provided with a built-in gas temperature conversion device

BS EN 3475-413 covers the preparation of specimens

BS EN 61207-1 specifies the terminology

The coatings may be dull or bright as electroplated or may be flow-melted by fusion after electroplating

BS 8426:2003 is applicable independent of the type of e-learning system deployed

25 Permanent Virtual Circuits

This European Standard applies to specimens manufactured in the laboratory or prepared from cores

enabling users to do the method correctly

without causing product failures and damages

BS EN 62058-11 can be used for assessment of conformity with the requirements of the Directive 2004/22/EC of the European Parliament and of the Council on measuring instruments (MID)