TeeJet Technologies 844E - Method 2 - Known Tip Size Method

To Next Page

To Previous Page

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.