Testing & calibration spray computers

The test equipment for testing and calibrating spray computers consist of a flow meter connected to a digital flow readout unit in combination with a chronometer. It can be used to determinate the precise and real time application rate by way of measuring nozzle flow at the sprayer boom while driving over a predefined distance at a fixed speed.
This equipment can also be used to test individual flow rate of nozzles.

Testing equipment for spray computers

testing spray computers-1   testing spray computers-2

  • The measuring set-up and protocol fulfils the requirements set by ISO 5682-3 'Equipment for crop protection - Spraying equipment - Part 3: Test method for volume/hectare adjustment systems of agricultural hydraulic pressure sprayers‘
  • Based on time measurement and volume measurement over a predefined distance.
  • Speed and volume/hectare rate are measured at the same time.
  • Chronometer accuracy of 0.1 sec
  • Flow meter calibrated with an accuracy of +/- 0.5%


  • Calibrating and testing spray computers volume/ha rate and speed in field conditions
  • Determine volume/ha rate sprayers without spray computer
  • Testing flow rate of nozzles when mounted on the spray boom
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