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HARDI MEGA 230 / 350 CENTRIFUGAL OPERATORS MANUAL
6.15 Calibration (cont'd)
Select your calibration method- Ounce method or Formula method.
Then follow the steps described below:
Ounce Method
1. Determine how long it takes you to cover the test strip.
Use the following chart to determine the length of your test strip.
Row width for broadcast application is equal to your nozzle spacing.
For your drop nozzle or band application, use row spacing.
Row width or nozzle spacing (in.) Distance (ft.)
40 102
38 107
36 113
34 120
32 127
30 136
28 146
26 157
24 170
22 185
20 204
18 227
16 255
14 291
2. Measure the amount of time it takes you to travel the test strip when
throttle is set at spraying speed.
3. In a container (with oz. measurements), catch the spray from one
nozzle for that amount of time. For drop or band nozzles, catch the
spray from all nozzles for the row.
4. Read the ounces in the container. That is the actual GPA applied.
(ounces - GPA)
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