NEN EN ISO 9906 : 2012

1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Guarantees
   4.1 Subjects of guarantees
   4.2 Other conditions of guarantee
5 Execution of tests
   5.1 Subjects of tests
   5.2 Organization of tests
   5.3 Test arrangements
   5.4 Test conditions
6 Analysis of test results
   6.1 Translation of the test results to the
        guarantee conditions
   6.2 Measuring uncertainties
   6.3 Values of tolerance factors
   6.4 Verification of guarantees
   6.5 Obtaining specified characteristics
7 Measurement of flow rate
   7.1 Measurement by weighing
   7.2 Volumetric method
   7.3 Differential pressure devices
   7.4 Thin-plate weirs
   7.5 Velocity area methods
   7.6 Tracers method
   7.7 Other methods
8 Measurement of pump total head
   8.1 General
   8.2 Definition of the measuring sections
   8.3 Water level measurement
   8.4 Pressure measurements
9 Measurement of speed of rotation
10 Measurement of pump power input
   10.1 General
   10.2 Measurement of torque
   10.3 Electric power measurements
   10.4 Special cases
11 Cavitation tests
   11.1 General
   11.2 Test installations
   11.3 Determination of the NPSH required by the pump
Annex A (normative) Tolerance factors for pumps produced in
        series with selection made from typical performance
        curves and for pumps with a driver power input less
        than 10 kW (relevant to series pumps Grade 2)
Annex B (normative) Determination of reduced impeller
        diameters
Annex C (normative) Friction losses
Annex D (informative) Conversion to SI units
Annex E (informative) Guide for suitable time periods between
        calibrations of test instruments
Annex F (informative) Costs and repetition of tests
Annex G (informative) Performance correction chart for viscous
        liquids
Annex H (informative) NPSHR reduction for pumps handling
        hydrocarbon liquids and high temperature water
Annex I (informative) Statistical evaluation of measurement
        results
Annex J (informative) Pump test sheet
Annex K (informative) Checklist
Annex ZA (normative) Normative references to international
         publications with their relevant European publications
Bibliography

Defines hydraulic performance tests for customers' acceptance of rotodynamic pumps (centrifugal, mixed flow and axial pumps, hereinafter "pumps").