SN EN 14268 : 2005 CORR 2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Technical characteristics
  4.1 General specifications
  4.2 Rated operating conditions
  4.3 Materials
  4.4 Indicating device
      4.4.1 Manufacturing
      4.4.2 Unit of measurement
      4.4.3 Indicating range
      4.4.4 Colour coding for indicating devices
      4.4.5 Readability
      4.4.6 Verification scale
      4.4.7 Sealing device
      4.4.8 Interchangeability
      4.4.9 Connection to network
5 Metrological requirements
  5.1 Values of Q1, Q3 and Q4
  5.2 Measurement range
  5.3 Metrological classes
  5.4 Maximum permissible error
6 Tests and inspections
  6.1 Tests and inspections for model approval
      6.1.1 General
      6.1.2 Number of meters to be tested
      6.1.3 Test program
      6.1.4 Pressure resistance
      6.1.5 Determination of error/flow-rate curve
      6.1.6 Head loss
      6.1.7 Endurance tests
      6.1.8 Perturbations tests
  6.2 Tests and inspections during production
      6.2.1 General
      6.2.2 Pressure resistance
      6.2.3 Initial metrology
7 Measurement and test apparatus
8 Installation conditions
9 Marking
Bibliography

Applies to meters fitted to irrigation machines and networks. These meters are used to meter the actual volume of irrigation water flowing through a fully charged, closed pipe, in order to manage consumption, and to invoice the volume of water distributed.