Hardi HC5500, Instruction Book

Page: 45 / 80

7 - Menu 3 Calibration
45
Menu 3.5.2 Total
Calibration of the HARDI Tank Gauge is necessary to take in account
height of hitch point on the tractor and tyre mounting. Avoiding this
may result an inaccurate calculation of the tank contents.
Therefore it is recommended to begin the custom calibration with
connecting the sprayer to the tractor that will be used for spraying. Later
changes of tractor can affect the accuracy of the Tank gauge.
To make a custom calibration of TankGauge, do the following:
1.
Check that menu [3.2.1 Flow calibration] uses the correct PPU
value corresponding to the sprayers flow housing.
2.
Go to menu [3.5.2 Total].
3.
Fill the sprayer completely up to the filler lid in the top of the tank,
with a known amout of water, using an external calibrated
flowmeter. Alternatively weight the sprayer before and after filling,
and note the weight difference.
4.
Press .
μ
ATTENTION! As the accuracy of the custom calibration is affected, it is of high importance that the external calibrated
flowmeter measures the correct quantity within a 2 % deviation. Same accuracy of 2 % must be kept if weighting the
sprayer before/after filling is used.
±
WARNING! Do not leave the sprayer whilst filling the tank and keep an eye on the level indicator in order NOT to
overfill the tank.
5.
Press after ensuring the sprayer is level. Refill the tank up to the
tank lid if the sprayer is re-levelled.
Levelling the procession of sprayer is of great importance as the
accuracy is directly affected!
Assumed that the same tractor will be used after custom calibration, it is
not necessary for the sprayer to be level itself. But the whole procession
of tractor and sprayer (A) need to be level.
6.
Engage the pump and set P.T.O. revolutions at 540 rpm or 1000
rpm (depending on pump model).
7.
Open all boom sections and empty the tank.
FLOW CONSTANT
XXX.XX PPU
3.2.1
TOTAL STEP 1
Fill the tank
3.5.2
TOTAL STEP 2
Level sprayer
3.5.2
TOTAL STEP 3
Open all
3.5.2