7 - Menu 3 Calibration
7.3
Menu 3.2 Flow calibration
Which method to use
The flow transducer can be calibrated theoretically or with two practical
methods. The practical methods are preferred. Calibration is done with
clean water. The Flow Tank method is time consuming, but is more
accurate than the Flow Nozzle method.
When changing to nozzles with more than a 100% increase or decrease
in output, it is recommended to recalibrate the flow transducer.
Calibration is recommended to be done at least once during the
spraying season. Use the chart at the back of the book to record the
values.
Menu 3.2.1 Flow constant
The theoretical flow constant PPU value may be entered here.
The flow housing should have a calibration tag attached that shows a
tested PPU value for the flow meter. Use the navigation keys to enter
this value before calibration.
If there is no calibration tag attached to the flow housing, the table
below lists approximate PPU values for different flow housings. Different
flow housings are designated by groove (A).
μ
ATTENTION! Using the flow constant PPU from the calibration tag does not guarantee accuracy. Flow calibration
should still be carried out using one of the practical methods.
μ
ATTENTION! PPU indicates the number of pulses which theoretically come from the flow transducer while 1 gallon
of liquid passes through.
Housing Housing identification (A) Flow range Orifice PPU
g/min mm value
S/67 One outside groove 2 - 30 13.5 485.00
S/67 No groove 4 - 70 20.0 225.00
S/67 Two outside grooves 20 - 160 36.0 60.00
3 Calibration
>> 3.1 Speed calibration
3.2 Flow calibration
3.3 Boom setup
3.4 Regulation constant
3.5 Tank gauge calibration
3.6 Track calibration
Sprayer, tractor, Alpha or radar speed input.
Calibration of selected sensor
3.2.1 Flow calibration
485.000
PPU
EU units: FlowSensor dia/ca PPU: Ø13/120,Ø20/60,Ø36/17
US units: FlowSensor dia/ca PPU: Ø13/485,Ø20/225,Ø36/60
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