UNI EN 12480 : 2006

Foreword
1 SCOPE
2 NORMATIVE REFERENCES
3 TERMINOLOGY
   3.1 Terms and definitions
   3.2 Symbols
4 WORKING RANGE
   4.1 General
   4.2 Flowrate range
   4.3 Pressure range
   4.4 Temperature range
5 METROLOGICAL PERFORMANCE
   5.1 Error of indication
        5.1.1 Requirements
        5.1.2 Test
   5.2 Pressure loss
        5.2.1 Requirements
        5.2.2 Test
   5.3 Metrological repeatability
        5.3.1 Requirements
        5.3.2 Test
6 DESIGN AND MANUFACTURING
   6.1 General
   6.2 Material
        6.2.1 General
        6.2.2 Resistance to external corrosion
        6.2.3 Penetration resistance
        6.2.4 Adhesion of the protective coating
   6.3 Robustness
        6.3.1 Resistance to internal pressure
        6.3.2 Rate of change of pressure
        6.3.3 External leak tightness
        6.3.4 Temperature
        6.3.5 Overload
        6.3.6 Bending and torsional moment
        6.3.7 Transportation and storage
   6.4 Connections
   6.5 Pressure and temperature tappings
        6.5.1 Pressure tappings
        6.5.2 Temperature tappings
   6.6 Resistance to high temperature (optional)
7 METER OUTPUT
   7.1 Index
        7.1.1 General
        7.1.2 Magnetic coupling
        7.1.3 Mechanical indicating device
        7.1.4 Test element
   7.2 Index window
        7.2.1 General
        7.2.2 Requirements
        7.2.3 Tests
   7.3 Output drive shafts
        7.3.1 Requirements
        7.3.2 Tests
   7.4 Pulse generators
        7.4.1 General
        7.4.2 Specification for low frequency pulse
               generator
        7.4.3 Specification for high frequency pulse
               generator
        7.4.4 Electrical Connection
8 DURABILITY
   8.1 Requirements
   8.2 Tests
9 MARKING
   9.1 General
   9.2 Direction of flow
   9.3 Pressure tappings
   9.4 Durability and legibility of marking
        9.4.1 Requirements
        9.4.2 Indelibility test
10 DOCUMENTATION
   10.1 General
   10.2 Declaration of conformity
   10.3 Instruction manual
Annex A (normative) Pattern approval tests
Annex B (normative) Individual meter testing
Annex C (normative) Resistance to high temperature (optional)
   C.1 Requirements
   C.2 Test
        C.2.1 Apparatus
        C.2.2 Test conditions
        C.2.3 Test procedure
   C.3 Marking
Annex ZA (informative) Relationship between this European Standard
         and the Essential Requirements of EU Directive 2004/22
         Measuring Instruments Directive
Bibliography

Defines ranges, construction, performances, output characteristics and testing of rotary displacement gas meters for gas volume measurement.