Calibration Procedure

To Verify Sprayers Output:

1. Put clean water in the tank. Never perform tests with chemical or fertilizer solution in the tank.

2. Turn on the master spray and adjust pressure to the desired level. The engine speed should be the same as it would be under field conditions.

3. Hold a graduated pitcher under a nozzle for a certain length of time. Use a stopwatch or other watch that shows seconds to know how long the pitcher was collecting solution. Calculate the tips flow rate as follows. (Tip Flow Rate [L/min] equals Volume Collected [L] times 60, divided by Collection Time [s].)

4. Compare the tips actual flow rate with the required flow rate.

5. Repeat Steps 3-4 with a couple of nozzles in each section of the boom. It is necessary to check several nozzles to get an average output. Even brand new nozzles will most likely not yield the exact flow rate expected.

6. Replace nozzles if necessary. If any nozzle varies from required flow rate by more than 10%, replace it. If two or more nozzles fail to pass, replace all nozzles.

7. Adjust pressure if necessary, then repeat entire procedure. If average flow rate of the tips which were checked exceeds required flow rate, reduce pressure slightly. If average flow rate was too low, increase pressure slightly.

Formula