Natural gas. Measurement of properties. Volumetric properties: density, pressure, temperature and compression factor1 Scope This international Standard gives requirements and procedures for the measurement of the properties of natural gas that are used mainly for volume calculation and volume conversion: density at reference and at operating conditions, pressure, temperature and compression factor. Only those methods and instruments are considered that are suitable for field operation under the conditions of natural gas transmission and distribution, installed

It is assumed that the hydrogen is uniformly distributed throughout a part

NOTE A check list of appropriate tests is given in Annex A

1 at around 10 kHz

To assure that over the longer-term either consistency is being maintained (stability in process results) or that quality improvements are making the intended impact

other fluids or atmospheres if in other respects the switches meet the requirements of their special application

Change of required degree of protection from IP6X to IP4X to harmonize with the international wiring rules

This International Standard specifies dimensional

Key tasks to be undertaken to ensure lawful compliance and good practice

BS EN 1071-12:2010 Advanced technical ceramics

This document specifies a test method and the minimum requirements for virucidal activity of chemical disinfectants that form a homogeneous physically stable preparation when diluted with hard water – or in the case of ready-to-use products - with water

These products require evaluation to appropriate end-product safety requirements

There are a number of advantages in implementing an integrated management system that takes into account not only the services provided but also the protection of information