49
844E Sprayer Crontrol
98-70006 R3
Method 2 – Known Tip Size Method
Step 1 – Check Tip Size
Determine what size tip is on the sprayer. An actual
fl
ow collection should be done on a representative sample to
ensure the tips are not worn. To do this, set the boom pressure at 40 psi (2 bar). This must be pressure at the tips
(i.e. use manual pressure gauge mounted on the boom). Collect
fl
ow for 1 minute from 1 tip.
Example: XR8004 tip should spray 0.4 gallons in 1 minute (1.29 LPM) {0.32 Imp Gal}
Step 2 – Count Tips
Count the total number of tips to be used for measure. You can use 1 boom section, 2 boom sections, etc.
Example: Boom Section 1 has 10 tips
Step 3 – Calculated Flow
Multiply the number of tips to be measured by the size (or individual
fl
ow rate) of each tip.
Example: 10 tips x 0.4 GPM (1.29 LPM) {0.32 Imp GPM} = 4GPM (12.9 LPM) {3.2 Imp GPM}
Step 4 – Measure
Turn controller on and activate pump. Toggle on the Master Boom Switch and the number of boom sections to be
measured. Insure that the pressure at the boom is maintained at 40 psi (2 bar). While spraying press and hold the
key in. Look at the lower right display to see if the measured
fl
ow matches the calculated
fl
ow.
Step 5 – Adjustments
If the measured
fl
ow does not match the calculated
fl
ow, the
fl
ow meter number may need to be adjusted. If the
measured
fl
ow is higher than the calculated
fl
ow, the
fl
ow meter calibration number needs to be decreased. If the
measured
fl
ow is lower than the calculated
fl
ow, the
fl
ow meter calibration number needs to be increased.
Example: Calculated flow is 4.00 GPM (12.9 LPM)
{3.20 Imp GPM}; measured flow is 3.6 GPM
(11.6 LPM) {2.88 Imp GPM}
Decrease the
fl
ow meter calibration number by 10%. If original number was 650, enter 585 for this programming
value.
