Testing And Fine Tuning; Fine Tuning The Flow Constant - Ppu; Pin & Wire Connection - Hardi ISOBUS VT Operator's Manual

Testing and fine tuning

Fine tuning the flow constant - PPU

Calibration of the flow transducer is carried out with clean water but small changes may occur when adding pesticides or
fertilizer. This will effect the final readings. This is typically noted when the volume displayed on the display does not equal
the actual known volume that was sprayed out. The formula below can be used to "fine tune" the flow transducer PPU.
×
Original PPU Displayed Volume
------------------------------------------------------------------------------ -
New PPU
Sprayed Volume
For example, the spray tank is filled with 1000 gallons of spray liquid.
When sprayed out, the display showed a total of 900 gallons. (Original PPU = 485.0)
×
485.0 PPU 900 Gallons
--------------------------------------------------------- -
New PPU
1000 Gallons
Note the relation is inverse:
• To raise the displayed volume, the PPU is lowered.
• To lower the displayed volume, the PPU is raised.
Pin & Wire connection
AMP Super Seal Box
1 Negative
2 Positive
3 Signal
436.5 PPU
Color coding
Black
Brown
Blue
12 - Testing and fine tuning
12.1