NS EN 14154-3 : 2005 + A2 2011

Foreword
1 Scope
2 Normative references
3 Reference conditions
4 Administrative and external examination for approval
  programme
5 Performance tests for approval programme
  5.1 General requirements for the test installation
       5.1.1 Location
       5.1.2 Test water
       5.1.3 Calibrated reference device
       5.1.4 Freedom from spurious influences
       5.1.5 Group testing of meters
  5.2 Static pressure test
       5.2.1 Object of test
       5.2.2 Preparation
       5.2.3 Test procedure
       5.2.4 Acceptance criteria
  5.3 Determination of intrinsic errors (of indication)
       5.3.1 Object of test
       5.3.2 Preparation
       5.3.3 Test procedure
       5.3.4 Acceptance criteria
  5.4 Error (of indication) tests
       5.4.1 Object of test
       5.4.2 Preparation
       5.4.3 Test Procedure
       5.4.4 Acceptance criteria
  5.5 Absence of flow test
       5.5.1 Object of test
       5.5.2 Preparation
       5.5.3 Test procedure
       5.5.4 Acceptance criteria
  5.6 Water temperature test (within ROC)
       5.6.1 Object of test
       5.6.2 Preparation
       5.6.3 Test procedure
       5.6.4 Acceptance criteria
  5.7 Overload water temperature test
       5.7.1 Object of test
       5.7.2 Preparation
       5.7.3 Test procedure
       5.7.4 Acceptance criteria
  5.8 Water pressure test
       5.8.1 Object of test
       5.8.2 Preparation
       5.8.3 Test procedure
       5.8.4 Acceptance criteria
  5.9 Verification of flow profile sensitivity classes
       5.9.1 Object of test
       5.9.2 Preparation
       5.9.3 Test procedure
       5.9.4 Acceptance criteria
  5.10 Tests on ancillary devices of a water meter
       5.10.1 Object of test
       5.10.2 Preparation
       5.10.3 Procedure
       5.10.4 Acceptance criteria
  5.11 Pressure loss test
       5.11.1 Object of test
       5.11.2 Preparation
       5.11.3 Test procedure
       5.11.4 Acceptance criteria
  5.12 Reverse flow test
       5.12.1 Meters designed to measure reverse flows
       5.12.2 Meters not designed to measure reverse flows
  5.13 Endurance tests
       5.13.1 Continuous flow test
       5.13.2 Discontinuous flow test
6 Performance tests related to influence quantities
  6.1 General requirements
       6.1.1 Environmental classification
       6.1.2 Electromagnetic environments
       6.1.3 Reference conditions
       6.1.4 Test volumes for measuring error (of indication)
              of a water meter
       6.1.5 Influence of the water temperature
       6.1.6 Requirements for environmental tests
       6.1.7 Equipment under test (EUT)
  6.2 Climatic and mechanical environment
       6.2.1 Dry heat (non-condensing)
       6.2.2 Cold
       6.2.3 Damp heat, cyclic (condensing)
       6.2.4 Vibration (random)
       6.2.5 Mechanical shock
  6.3 Electromagnetic environment
       6.3.1 Electrostatic discharge
       6.3.2 Radiated radio frequency/Electromagnetic fields
  6.4 Power supply
       6.4.1 A.C. power voltage variation
       6.4.2 A.C. voltage dips and short interruptions
       6.4.3 Surge immunity
       6.4.4 Electrical fast transients/Burst
       6.4.5 D.C. power voltage variation
  6.5 Static magnetic field
       6.5.1 Object of test
       6.5.2 Preparation
       6.5.3 Test procedure
       6.5.4 Acceptance criteria
  6.6 Interruption in battery supply
       6.6.1 Object of test
       6.6.2 Test procedure
       6.6.3 Acceptance criteria
Annex A (normative) Irregularity in water velocity field
  A.1 Irregularity in water velocity field
  A.2 Flow disturbers
Annex B (informative) Examples of methods and components
                      used for testing Concentric Water Meters
Annex C (normative) Equipment and method used to determine
                      meter error
  C.1 Principle
  C.2 Description of the test rig
  C.3 Pipe-work
       C.3.1 Description
       C.3.2 Test section
       C.3.3 Precautions to be taken during tests
       C.3.4 Special arrangements for the installation of
              meters
       C.3.5 Cyclic distortion of the meter
       C.3.6 Major factors affecting the measurement of
              errors of indication
Annex D (informative) Equipment and methods for pressure
                      loss test
  D.1 Principle
  D.2 Pressure loss test equipment
       D.2.1 General
       D.2.2 Measuring section
  D.3 Test procedure
       D.3.1 Determination of pressure loss attributable to
              pipe lengths for water meters (measurement 1)
       D.3.2 Measurement and calculation of the actual delta P
              of a water meter (measurement 2)
Annex E (informative) Characteristics of reference devices
  E.1 General
  E.2 Types of reference devices
       E.2.1 Calibration using volumetric vessels
       E.2.2 Calibration using reference meters (master
              meters)
       E.2.3 Calibration using calibrated tubes
       E.2.4 Calibration by weighing method
       E.2.5 Other calibration methods
Bibliography

Applies to water meters intended for residential, commercial, light industrial and industrial use, and specifies the test parameters and the test methods for water meters, irrespective of the design technologies, as specified in EN 14154-1, used to meter the actual volume of clean cold potable water or heated water, flowing through a fully charged, closed conduit.