PREN 13739-2 : DRAFT 2009

Foreword
1 Scope
2 Normative references
3 Definitions
4 Test conditions
  4.1 Machine for test
       4.1.1 Rotating test
       4.1.2 Transverse test
  4.2 Test materials
  4.3 Application rates
5 Test equipment
  5.1 Accuracy in weighing measurements
  5.2 Rotating test
       5.2.1 Measurement of the angular position
              of the spreader
       5.2.2 Data acquisition device
       5.2.3 Devices for receiving fertilizer for spread
              pattern distribution
  5.3 Transverse test
       5.3.1 Devices for receiving fertilizer for
              transverse distribution
  5.4 Test site
  5.5 Handling of test materials during the tests
6 Test methods
  6.1 Contact with obstacles
  6.2 Estimation of hopper volume - Checking of the
       spillage
  6.3 Adjustment of flow rate
  6.4 Reduced working width or throwing width
  6.5 Flow rate regulation system, when available
       6.5.1 Deviations of the flow rate
       6.5.2 Continuous mass flow measurements
  6.6 Evenness of transversal distribution
       6.6.1 Arrangement of containers
       6.6.2 Procedure
  6.7 Evenness of transverse distribution near the
       field edge
  6.8 Evenness of transverse distribution when
       spreading with equipment for top-dressing
  6.9 Deviation of the obtained flow rate from the
       intended flow rate
  6.10 Evenness of obtained flow rate
       6.10.1 Obtained flow rate on horizontal ground
       6.10.2 Obtained flow rate on sloping ground
7 Calculation and presentation of test results
  7.1 Transverse distribution
       7.1.1 Determination of the fertilizer amount
              distributed
       7.1.2 Working width
       7.1.3 Degree of unevenness of transverse distribution
       7.1.4 Equipment for spreading near the field edge
       7.1.5 Top-dressing
  7.2 Flow rate
       7.2.1 Obtained flow rate on horizontal ground
       7.2.2 Obtained flow rate on sloping ground
8 Test report
Annex A (normative) - Determination and specification of
        physical properties of test materials
Annex B (informative) - Example of a fertilizer - collecting
        container
Annex C (informative) - Example of a test report
  C.1 Features of the fertilizer distributor
       C.1.1 Description
       C.1.2 Dimensions and specifications
  C.2 Physical properties of test material
  C.3 Test conditions
  C.4 Test equipment
  C.5 Test results
       C.5.1 Contact with obstacles
       C.5.2 Estimation of hopper volume
       C.5.3 Adjustment of flow rate
       C.5.4 Reduced working width
       C.5.5 Flow rate regulation system
       C.5.6 Evenness of transverse distribution on
              level ground
       C.5.7 Evenness of transverse distribution near
              the field edge
       C.5.8 Evenness of transverse distribution when
              spreading with equipment for top-dressing
       C.5.9 Deviation from intended flow rates
       C.5.10 Evenness of flow rate
  C.6 Inspections
       C.6.1 General
       C.6.2 Hopper filling opening
       C.6.3 Hopper emptying
       C.6.4 Hopper cleaning
       C.6.5 Calibration aids
       C.6.6 Feeding device
       C.6.7 Spillage
       C.6.8 Instruction handbook
  C.7 Remarks
Bibliography

Describes methods to test mounted, trailed and self-propelled broadcasters and full width solid fertilizer distributors used in agriculture and horticulture.