PDF: https://www.paulbparts.com/wp-content/uploads/2016/02/nitrogenCalibrationChart.pdf
100 units of nitrogen are divided by 3.3 = 30.3 gallons per acre.
The text that I copied off the PDF is:
Calibration for Dripping Nitrogen with D-Orifice Discs
Information Needed: Formula to Calibrate Nozzle Size:
– gallon per acre
– speed of travel G.P.M. = G.P.A. x M.P.H. x W
– nozzle spacing (inches) 5940
Key:
P.S.I. = pounds per square inch
G.P.M. = gallons per minute
M.P.H. = miles per hour
G.P.A. = gallons per acre
W = nozzle spacing
Note: 3.3 UNITS OF NITROGEN PER GALLON
Example of Calibration:
100 units of nitrogen are divided by 3.3 = 30.3 gallons per acre. 30.3 gallons per
acre x speed of 4 mph = 121.2. Now multiply 121.2 x 30″ nozzle spacing. = 3636.
Next divide 3636 by 5940 = .61 gallons per minute flow per nozzle. Now by
checking D-Orifice chart, you will see D-5 Orifice with liquid nitrogen flows .62
gallons at 30 lb pressure.
Note: WHEN USING BALL CHECK STRAINERS, ADD 5 LB PRESSURE.
Checking Tractor Speeds:
Speed in MPH Time required in seconds to travel a
distance of
100 ft 200 ft
3.0 23 45
3.5 20 39
4.0 17 34
4.5 15 30
5.0 14 27
6.0 11 23
7.0 —- 19
7.5 —– 18
8.0 —- 17
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