Operating conditions for industrial-process measurement and control equipment - Part 4: Corrosive and erosive influences

Published date

28-08-1997

Publisher

European Committee for Standards - Electrical

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

Considers 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. Maintenance and repair conditions are not considered.

Committee	CLC/TC 65X
DocumentType	Standard
PublisherName	European Committee for Standards - Electrical
Status	Current

Standards	Relationship
IEC 60654-4:1987	Identical
NBN EN 60654-4 : 1998	Identical
NEN EN IEC 60654-4 : 1997	Identical
I.S. EN 60654-4:1999	Identical
PN EN 60654-4 : 2000	Identical
SN EN 60654-4 : 1997	Identical
UNE-EN 60654-4:1999	Identical
BS EN 60654-4:1998	Identical
CEI EN 60654-4 : 1998	Identical
NF EN 60654-4 : 1997	Identical
DIN EN 60654-4:1998-08	Identical

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