OIML R 49-2 : 2013

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Reference conditions
5 Symbols, units and equations
6 External examination
7 Performance tests for all water meters
8 Performance tests related to influence factors
   and disturbances
9 Test program for type evaluation
10 Tests for initial verification
11 Presentation of results
Annex A (Mandatory) - Type examination and testing
        of checking facilities of electronic devices
Annex B (Mandatory ) - Calculating the relative error (of
        indication) of a water meter
Annex C (Mandatory) - Installation requirements for flow
        disturbance tests
Annex D (Mandatory) - Type evaluation of a family of
        water meters
Annex E (Informative) - Examples of methods and
        components used for testing concentric
        water meters
Annex F (Informative) - Determining the density of
        water
Annex G (Informative) - Maximum uncertainties in the
        measurement of influence factors and
        disturbances
Annex H (Informative) - Pressure loss test pressure
        tappings, hole and slot details
Annex I (Mandatory) - Flow disturbers
Bibliography

Provides details of the test program, principles, equipment and procedures to be used for the type evaluation, and initial verification of a meter type.