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    I.S. EN 60654-4:1999

    Current The latest, up-to-date edition.

    OPERATING CONDITIONS FOR INDUSTRIAL-PROCESS MEASUREMENT AND CONTROL EQUIPMENT - PART 4: CORROSIVE AND EROSIVE INFLUENCES

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-1999

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    PREFACE
    1 Scope
    2 Object
    3 General
    4 Non-solid substances
      4.1 Definitions
    5 Gases and vapours
      5.1 Contamination effects
      5.2 Inorganic chlorine compounds
      5.3 Explanation of contaminant severity levels
    6 Aerosols
    7 Liquids
    8 Solid substances
      8.1 Kind of industrial-process and location within that process
      8.2 Nature of solid substances in the environment which could
           affect the instruments
      8.3 In combination with
      8.4 Frequency of occurrence
      8.5 Size
      8.6 Concentration in mg/kg or g/kg of dry air
      8.7 Velocity in m/s
      8.8 Thermal conductivity
      8.9 Electrical conductivity
      8.10 Magnetic permeability
      8.11 Example given to demonstrate the use of the questionnaire
    9 Flora and fauna
    APPENDIX A - Industrial contaminants
    APPENDIX B - Methods of classification of reactive environments

    Abstract - (Show below) - (Hide below)

    Gives the corrosive and erosive industrial environment to which land-based and offshore industrial-process measurement and control systems or parts of systems may be exposed during operation, during periods when they are installed but inactive, during storage or transportation.

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    Development Note For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current
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