EN 13673-1:2003

Foreword
Introduction
1 Scope
2 Terms and definitions
3 Test method
  3.1 Principle
  3.2 Apparatus
      3.2.1 Test vessel
      3.2.2 Equipment for preparing the test mixture
      3.2.3 Ignition system
      3.2.4 Pressure measuring system
      3.2.5 Temperature measuring device
      3.2.6 Safety aspects
  3.3 Preparation and preservation of test samples
  3.4 Procedure
      3.4.1 Preparation of the test mixture
      3.4.2 Determination of the explosion pressure
            P[ex] and the maximum explosion pressure
            P[max]
  3.5 Expression of results
  3.6 Test report
Annex A (normative) Verification
Annex B (informative) Conversion of the values for
        the flammable substance content
  B.1 Abbreviations and symbols
  B.2 Substances characteristics of air
  B.3 Definitions
  B.4 Preparation of the test mixture
  B.5 Conversion
Annex C (informative) Example of an evaporator
        equipment for liquid flammable substances
Annex D (informative) Example for test report form
Annex ZA (informative) Clauses of this European
         Standard addressing essential requirements
         or other provisions of EU Directives

The standard test method is designed to determine the explosion pressure and the maximum explosion pressure of a flammable gas/air/inert mixture at ambient temperature and pressure. In this standard, "gas" also includes vapours but not mists. Detonation phenomena are not considered in this standard.