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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)
