ZA-X BAG0235.4
8.2.3 Determining the slider position using the calibration kit (optional)
The calibration kit is used to determine the shutter position for the
desired spread rate without setting chart using a nomogram or a
slide ruler.
When the slider position is being determined, both sliders of the outlet
openings remain closed and the universal joint shaft remains
switched off.
CAUTION
Finger cutting points on the slider of the calibration kit.
Nomogram
Fig. 62
This nomogram consists of the following:
(1) An upper scale (Fig. 62/1) for the quantity of fertiliser caught
during the spread rate check, between 7 and 44 lb or
3 and 20 kg.
(2) A middle scale (Fig. 62/2) for the desired spread rate between
36 and 1160 lb/ac or 40 and 1300 kg/ha.
(3) A lower scale (Fig. 62/3) for the slider position from 7 to 27.
Calculator disc rule
The calculator disc rule comprises:
(1) The white scale on the outside with the
spread rates [kg/ha] (spread rate).
(2) The white scale on the inside for the
amount of fertilizer collected during the
spread rate check [kg] (amount collected).
(3) The coloured scale in the middle with the
shutter position (position).
Symbols on the calculator disc rule:
63
Spread rate
Spread rate
collected
Shutter position