TeeJet TASC-6600 - Manual (Page 19)

2-7
TASC-6000, 6300, 6600 98-05010
Rev. - 1
B. Use the INC/DEC switch to select the initial distance calibration value suggested. You are now ready to perform
the distance calibration.
2.7.2 DISTANCE CALIBRATION PROCEDURE
The following procedure is recommended by MIDWEST TECHNOLOGIES for establishing an accurate distance calibra-
tion. NOTE: All pump and boom switches should remain OFF during the entire procedure.
A. Fill the main tank 1/2 full of water, to approximate actual load conditions. This minimizes the effect on the radar
mounting angle and/or actual working diameter of the tires as the main tank empties.
B. Measure out a known distance of 400 ft. (150 m) or more in a field or roadway. Make it an easy place to maneuver
the vehicle. The longer the distance, the more accurately the test can be performed. Keeping the distance in even
hundreds of feet will make the calculations easier.
C. Drive the vehicle to the starting point of the distance range and stop.
D. Turn the Display Selector to the DISTANCE position and the Mode Select switch to SET-UP. The console
displays the current Distance Calibration Number. Record this number for future reference. As an example,
assume this number is 1000.
E. Return the Mode Select switch to OPERATE and check to see that the accumulated distance is set at zero. If not,
reset it to zero using the INC/DEC switch.
F. Start driving. Drive the vehicle at a speed of between 5 and 10 mph (8 - 16 kph). The distance start to accumulate
in the display.
G. Stop the vehicle at the end marker. The display shows the accumulated distance. Compare this distance to the
actual Measured distance, to determine how much of a correction is necessary. For example, if an accumulated
distance of 396 ft. (149 m) is shown after driving over a 400 ft. (150 m) range, the error in the distance calibration
is 1.0% (.7%).
H. Calculate the new Distance Calibration Number using the following formula:
(Measured distance/Accumulated distance) x Old DC# = New DC#
If the accumulated distance is less than the measured distance
the new Cal# will be larger.
Example: (400 / 396) x 1000 = 1010, the New DC#
NOTE: The same procedure is used, regardless of the type of distance sensor .
RECORD THE DISTANCE CALIBRATION NUMBER HERE:
2.8 INJECTION PUMP CALIBRATION (TASC-6300 & 6600 ONLY)
The pump calibration procedure "fine tunes" the precision injection pumps to ensure the highest possible accuracy of the
TASC-6300 or 6600 system for your sprayer. It is important to understand that each of the injection pumps installed on a
particular sprayer must be separately calibrated. It is also important to periodically check the calibration of the individual
pumps to ensure they continue to perform properly. Checking the calibration is particularly important when the tubing in
the pump chamber has been replaced or when the system is being activated after an extended downtime.