Great Plains NTA2007 Operator Manual - Manual (Page 79)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 75
2012-01-05 Table of Contents Index 166-372M
Meter Rate Adjustment
Seed rate is determined by:
• Flute shafts (covered on page 69):
standard 2-star/1x rate, or
optional 3-star/1.5x or 4-star/2x rates
• Single/twin hopper metering (covered on page 70).
• Seed meter Final Drive Range gearing
• Variable Rate Gearbox setting
The Seed Rate Chart Manual charts are based on
cleaned untreated seed of average size and test weight.
Many factors affect meter rates including foreign
material, seed treatment, seed size, field conditions, and
test weight.
Minor adjustments will be needed to compensate for
these factors. Initially set the rates according to the
charts, then calibrate for your material and conditions.
Calibration is also required to set up the monitor
Calibration Constant. With the correct Calibration
Constant and material density the monitor can be used
to help fine tune the variable rate gearbox setting.