Spray distribution of set of nozzles

Determination of the spray distribution of a set of nozzles under standardised conditions (working pressure, angle, height) (ISO 5682-2).

Spray scanner

Technique and measuring protocol

  • The spray scanner consists of a receiver-unit with 0.10 m grooves which moves along an aluminium rail installed beneath the spray boom
  • Standard spray boom
    • 12 m boom width, 0.50 m nozzle spacing
    • max. deviation nozzle height < 0.01 m
    • 4 sections, pressure accuracy ±1%
  • The measuring set-up and protocol fulfils the requirements set by ISO 5682-2 'Equipment for crop protection - Spraying equipment - Part 2: Test methods for hydraulic sprayers'
  • Four symmetrical equivalent repetitions


  • Spray liquid distribution, coefficient of variation CV (+ s.d.)


  • Measurement of spray distribution (CV) of a set of nozzles


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