NS EN 13673-1 : 1ED 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

Gives measurement of the explosion pressure and the maximum explosion pressure of a quiescent flammable gas/air/inert mixture in an empty closed volume at ambient temperature and pressure.