SN EN 61285 : 1994

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Location of AHs and connection within the process plant areas
  4.1 Response time
  4.2 Utilities
  4.3 Safety
  4.4 Access
5 Design, construction and layout of AHs
  5.1 General
  5.2 General requirements
  5.3 Dimensions and layout
  5.4 Structural requirements
  5.5 Equipment
  5.6 Labelling/instructions/documentation
6 Explosion protection of AHs
  6.1 General
  6.2 General requirements
  6.3 Protection of AHs against explosion hazards by means of
      artificial ventilation
  6.4 Protection of AHs against explosion hazards by means of
      natural ventilation
7 Measures to prevent health hazards to personnel in AHs
  7.1 General
  7.2 Guidelines
  7.3 General requirements
  7.4 Safety measures
  7.5 External hazards
  7.6 Additional measures for abnormal working conditions
  7.7 Labelling/instructions/documentation
Annex A (normative) Leakage risk of modules in AHs
Annex B (informative) Ventilation calculation (assumes STP
                      conditions)
Annex ZA (normative) Normative references to international
                      publications with their corresponding European
                      publications
Bibliography

Describes the physical requirements for the safe operation of the process analyser measuring system installed in an analyser house (AH) in order to ensure its protection against health hazards, explosion and fire.