APPENDIX 8
64 ISOBUS Product Control Installation & Operation Manual
SPREADER CONSTANT
NOTE: The spreader constant should be verified by performing the procedure described in theVerification of
Spreader Constant section on page 64.
For Gran 2 or Gran 3 applications, gate width is the total of both openings.
STANDARD RATE DISPLAY
For rates displayed in 1 pound increments, the formula to calculate the spreader constant is:
Where SC = the Spreader Constant, L = Length of belt travel in inches per 1 revolution of the encoder, GH = Gate
Height in inches, GW = Gate Width in inches.
FOR EXAMPLE:
Given a Length of belt travel of 13 inches, a Gate Height of 7 inches, and a Gate Width of 15 inches:
Enter 228 as the Spreader Constant if the VT display is set to display English or standard units.
METRIC RATE DISPLAY
For Rates displayed in 1 kilogram increments, the formula to calculate the spreader constant is:
Where SC = the Spreader Constant, L = Length of belt travel in centimeters per 1 revolution of the encoder, GH =
Gate Height in centimeters, and GW = Gate Width in centimeters.
FOR EXAMPLE:
Given a Length of belt travel of 33 cm, a Gate Height of 18 cm, and a Gate Width of 38 cm:
Enter 797 as the Spreader Constant if the VT display is set to display Metric units.
VERIFICATION OF SPREADER CONSTANT
To verify and refine the spreader constant, perform the following procedure:
1. Weigh loaded truck and record the initial weight.
SC
311 040,
LGH× GW×
---------------------------------
=
311 040,
13 7× 15×
---------------------------
228=
SC
18 000 000,,
LGH× GW×
---------------------------------
=
18 000 000,,
33 18× 38×
------------------------------
797=
To Next Page
Loading...
