EN 60654-4:1997

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

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.

Einsatzbedingungen für Meß-, Steuer- und Regeleinrichtungen in der industriellen Prozeßtechnick - Teil 4: Korrosive und erosive Einflüsse

Conditions de fonctionnement pour les matériels de mesure et commande dans les processus industriels - Partie 4: Influences de la corrosion et de l'érosion

Prend en considération les conditions d'environnement propres à la corrosion et à l'érosion auxquelles les systèmes de mesure et de commande des processus industriels ou les constituants de ces systèmes, situés à terre ou sur des plates-fomres en mer, peuvent être exposés en cours de fonctionnement, au cours de périodes pendant lesqueles ils sont installés mais ne sont pas actifs, en cours de stockage ou en cours de transport. Les conditions d'entretien et de réparation ne sont pas traitées.

Operating conditions for industrial-process measurement and control equipment - Part 4: Corrosive and erosive influences (IEC 60654-4:1987)

General Information

• Status: Published
• Publication Date: 27-Aug-1997
• Withdrawal Date: 31-May-1998
• ICS: 25.040.40 - Industrial process measurement and control
• Technical Committee: CLC/TC 65X - Industrial-process measurement, control and automation
• Drafting Committee: IEC/SC 65A - IEC_SC_65A
• Parallel Committee: IEC/SC 65A - IEC_SC_65A
• Current Stage: 6060 - Document made available - Publishing
• Completion Date: 28-Aug-1997
• Ref Project: SIST EN 60654-4:1998 - Operating conditions for industrial-process measurement and control equipment -- Part 4: Corrosive and erosive influences

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60654-4:1998
01-november-1998
Operating conditions for industrial-process measurement and control equipment -
Part 4: Corrosive and erosive influences (IEC 60654-4:1987)
Operating conditions for industrial-process measurement and control equipment -- Part
4: Corrosive and erosive influences
Einsatzbedingungen für Meß-, Steuer- und Regeleinrichtungen in der industriellen
Prozeßtechnick -- Teil 4: Korrosive und erosive Einflüsse
Conditions de fonctionnement pour les matériels de mesure et commande dans les
processus industriels -- Partie 4: Influences de la corrosion et de l'érosion
Ta slovenski standard je istoveten z: EN 60654-4:1997
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
SIST EN 60654-4:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60654-4:1998

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SIST EN 60654-4:1998

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SIST EN 60654-4:1998

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SIST EN 60654-4:1998
NORME
CEI
INTERNATIONALE
IEC
654-4
INTERNATIONAL
Première édition
STANDARD
First edition
1987
Conditions de fonctionnement pour les matériels
de mesure et commande dans les processus
industriels
Quatrième partie:
Influences de la corrosion et de l'érosion
Operating conditions for industrial-process
measurement and control equipment
Part 4:
Corrosive and erosive influences
© CEI 1987 Droits de reproduction réservés — Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized
utilisée sous quelque forme que ce soit et par aucun procédé, in any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission
microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher
Bureau central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève Suisse
CODE PRIX
Commission Electrotechnique Internationale
P
PRICE CODE
International Electrotechnical Commission
IEC MeaayHapo,aHas+ 3nenrporexHH4ecnaa
HoMHCCHH
• Pour prix, voir catalogue en vigueur
•
For price, see current catalogue

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SIST EN 60654-4:1998
654-4 © I E C 1987 3
CONTENTS
Page
FOREWORD 5
PREFACE 5
Clause
1. Scope 7
2. Object 7
3. General 9
4. Non-solid substances 9
11
4.1 Definitions
11
5. Gases and vapours
11
5.1 Contamination effects
11
5.2 Inorganic chlorine compounds
13
5.3 Explanation of contaminant severity levels
15
6. Aerosols
17
7. Liquids . . .
17
8. Solid substances
17
8.1 Kind of industrial-process and location within that process
8.2 Nature of solid substances in the environment which could affect
17
the instruments
19
In combination with 8.3
19
8.4 Frequency of occurrence
19
8.5 Size
19
8.6 Concentration in mg/kg or g/kg of dry air
19
8.7 Velocity in m/s
21
8.8 Thermal conductivity
21
8.9 Electrical conductivity
8.10 Magnetic permeability 21
21
8.11 Example given to demonstrate the use of the questionnaire
9. Flora and fauna 23
APPENDIX A — Industrial contaminants 25
27
APPENDIX B — Methods of classification of reactive environments

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SIST EN 60654-4:1998
654-4 0 I E C 1987 — 5—
INTERNATIONAL ELECTROTECHNICAL COMMISSION
OPERATING CONDITIONS FOR INDUSTRIAL-PROCESS
MEASUREMENT AND CONTROL EQUIPMENT
Part 4: Corrosive and erosive influences
FOREWORD
1) The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on which all
the National Committees having a special interest therein are represented, express, as nearly as possible, an international
consensus of opinion on the subjects dealt with.
2) They have the form of recommendations for international use and they are accepted by the National Committees in that
sense.
In order to promote international unification, the IEC expresses the wish that all National Committees should adopt
3)
the text of the IEC recommendation for their national rules in so far as national conditions will permit. Any divergence
between the IEC recommendation and the corresponding national rules should, as far as possible, be clearly indicated
in the latter.
PREFACE
This standard has been prepared by IEC Technical Committee No. 65: Industrial-process
measurement and control.
The text of this standard is based upon the following documents:
Six Months' Rule Report on Voting
65(CO)38 65(CO)41
Full information on the voting for the approval of this standard can be found in the Voting
Report indicated in the above table.

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