NEN EN 50131-2-4 : 2008

Introduction
1 Scope
2 Normative references
3 Definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
4 Functional requirements
  4.1 Indication signals or messages
  4.2 Detection
  4.3 Operational requirements
  4.4 Immunity of the individual technologies to incorrect
       operation
  4.5 Tamper security
  4.6 Electrical requirements
  4.7 Environmental classification and conditions
5 Marking, identification and documentation
  5.1 Marking and/or identification
  5.2 Documentation
6 Testing
  6.1 General test conditions
  6.2 Basic detection test
  6.3 Walk testing
  6.4 Switch-on delay, time interval between signals and
       indication of detection
  6.5 Self tests
  6.6 Immunity of individual technologies to incorrect operation
  6.7 Tamper security
  6.8 Electrical tests
  6.9 Environmental classification and conditions
  6.10 Marking, identification and documentation
Annexes
Annex A (normative) Dimensions & Requirements of the standardised
        Test Magnets
Annex B (normative) General testing matrix
Annex C (normative) Walk test diagrams
Annex D (normative) Procedure for calculation of the average
        temperature difference between the standard target and the
        background
Annex E (informative) Basic detection target for the basic test of
        detection capability
Annex F (informative) Equipment for walk test velocity control
Annex G (informative) Immunity to visible and near Infrared
        radiation - Notes on calibration of the light source
Annex H (informative) Immunity to microwave signal interference by
        fluorescent lights
Annex I (informative) Example list of small tools
Annex J (informative) Test for resistance to re-orientation of
        adjustable mountings