Great Plains YP2425A Material Rate - Manual (Page 39)

Great Plains Manufacturing, Inc. Table of Contents Metric Charts Volumetric Seeding 37
2012-02-29 Table of Contents Metric Charts 401-626B
33. Weigh the containers plus seed (GrossWeight).
Subtract the empty container weights to obtain the
net weight.
34. The seed monitor assumes that all rows were tested.
If you tested fewer (commonly the case), scale the
sample size to planter-wide:
35. Enter the Amount Dispensed.
The seed monitor computes a new Spreader
Constant.
Note: If the net weight of the metered sampled was
dramatically different than expected, run another
calibration to validate or revise the new spreader
constant.
Calibrate Speed Sensor
36. Perform a Ground Speed Calibration procedure.
37. Refer to “Furrow Checking Rate” on page 31 to
verify seed rates.
For example: ContainerWeight: 2 lbs
GrossWeight : 12.88 lbs
12.88 - 2 = 10.88
NetWeight : 10.88 lbs
For example: NetWeight: 10.88 lbs
RowCount : 31
RowsSampled : 4
(10.88 Ч 31) ч 4 = 84.34 lbs
AmountDispensed : 84.34
NetWeight GrossWeight ContainerWeight – =
AmountDispensed
NetWeight RowCount
×
RowsSampled
--------------------------------------------------------- =