Flow Sensor Calibration

The number of pulses per liter of the flow sensor (flow rate meter) must be calibrated if a flow sensor is fitted. This is best performed as follows:

• Program a default value for the number of pulses per liter (e.g. 625)
• As low simulation speed, program a speed of e.g. 6 km/h
• In the spray volume table, read the nozzle output (l/min) belonging to the target application rate in l/ha (e.g. 300 l/ha) and driving speed (e.g. 6 km/h). In this example, the nozzle flow rate will be 1.5 l/min
• Activate the simulation speed
• Let the machine spray with all sections opened until exactly 300 l/ha appears on the display (can be set both manually and automatically)
• Now measure the output of a few nozzles with the aid of a stop watch and a measuring jug for one minute (preferably one nozzle behind the machine, one in the centre of the spray boom and one at the end of the spray boom)
• Calculate the average nozzle output in l/min (let's assume this is 1.44 l/min)
• The correct flow sensor pulse value is:

The correct pulse value in the example is:

AG,WZ00009,82 -19-22SEP05-1/1