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HARDI
MEGA 230 / 350 CENTRIFUGAL OPERATORS MANUAL
6.15 Calibration (cont'd)
Calibration for carriers other than water
Use the following water rate conversion chart to determine the right
conversion factor. When you've determined the new converted GPM or
GPA, you can follow the steps on either the pressure or ounce method of
calibration.
Example:
20 GPA of 28% N
Then GPA (solution) x conversion factor = GPA (water)
20 GPA (28% N) x 1.13 = 22.6 GPA (water)
Calibrate for 22.6 GPA of water
For conversion to Imperial gallons per acre, multiply U.S. GPA by .833
For conversion to liters per hectare, multiply U.S. GPA by 9.34
For conversion to liters per acre, multiply U.S. GPA by 3.78
Formula for tractor speed: Distance (in feet) x .682 = MPH
Second
Weight of solution
Specific Gravity
Conversion Factors
7.00 lbs/gal
.84
.92
8.00 lbs/gal
.96
.98
8.34 lbs/gal-water
1.00
1.00
9.00 lbs/gal
1.08
1.04
10.00 lbs/gal
1.20
1.10
10.65 lbs/gal-28% N
1.28
1.13
11.00 lbs/gal
1.32
1.15
12.00 lbs/gal
1.44
1.20
14.00 lbs/gal
1.68
1.30
