Hardi HC 5500 SPRAY BOX III, Instruction Book

Page: 54 / 84

7 - Menu 3, Calibration
54
Menu 3.5.2 Calibration
Calibration of the HARDI Tank Gauge is necessary to take into account
the 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, which will be used for spraying. A
later change of tractor can affect the accuracy of the tank gauge.
To make a custom calibration of Tank Gauge, 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 Calibration].
3.
Fill the sprayer completely up to the filler lid in the top of the tank,
with a known amount of water, using an externally calibrated
flowmeter. Alternatively, weigh 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 externally
calibrated flowmeter measures the correct quantity within a 2% deviation. Same accuracy of 2% must be kept if
weighing 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 tractor and sprayer is of great importance as the accuracy
is directly affected!
Assumed that the same tractor will be used after customized calibration,
it is not necessary for the sprayer itself to be level. But the whole vehicle,
tractor and sprayer (A), need to be level. Alignment device (B) and spirit
level (C) are helpful tools.
6.
Engage the pump and set PTO 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
CALIB. STEP 1
Fill the tank
3.5.2
CALIB. STEP 2
Level sprayer
3.5.2
CALIB. STEP 3
Open all
3.5.2