General Calibration Formulas
Finding The Correct Nozzle Size
Acre Method:
G.P.M. (per nozzle) = G.P.A. x M.P.H. x Nozzle Spacing (inches)
5940
Example: .81 G.P.M. = 80 G.P.A. x 3 M.P.H. x 20”
5940
After determining the gallons per minute refer to the Capacity column on the Nozzle
Charts later in this booklet.
1,000 Square Foot Method:
G.P.M. (per nozzle) = G.P. 1,000 sq. ft. x M.P.H. x Nozzle Spacing
136
Example: .88 G.P.M. = 2 G.P.1,000 sq. ft. x 3 M.P.H. x 20”
136
After determining the gallons per minute refer to the Capacity column on the Nozzle
Charts later in this booklet.
NOTE: G.P.M = gallons per minute
M.P.H. = miles per hour
G.P.A. = gallons per acre
G. P. 1,000 sq. ft. = gallons per thousand square feet
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CalibGuide\EasyMethod.doc
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