TeeJet 844-AB Sprayer Control - Manual (Page 15)

13
98-70007-EN R4
844-AB
Density (Liquid specific gravity)
The default value of “1.00” corresponds with the specific gravity of
water and is correct for most pesticide applications. Some spray
solutions, such as fertiliser, have different densities. If such a
material is being used, a new value should replace the default.
Figure 44: Density display
1.28
1 2 3 4 5 6 7 8 9 10 11 12
Use the Plus or Minus keys to change the value. Press the
Plus and Minus keys simultaneously to clear the value to
“0”. Press the Programme key to accept the value and advance
to the next step.
The following chart will help determine the density of other solutions.
Table 3: Density settings
Weight of solution per
Specific Gravity Gallon Litre
7.0 lb 0.84 Kg 0.84
8.0 lb 0.96 Kg 0.96
8.34 lb (water) 1.00 Kg 1.00
10.0 lb 1.20 Kg 1.20
10.65 lb (28% N) 1.28 Kg 1.28
10.85 lb (30% N) 1.30 Kg 1.30
11.0 lb 1.32 Kg 1.32
12.0 lb 1.44 Kg 1.44
14.0 lb 1.68 Kg 1.68
If the solution is not identified on the chart (above), the Specific
gravity can be calculated as follows:
• Water weighs 1 Kg/L.
• To activate the specific gravity number while in the Application
setup mode, press the Auto/man key so “D” is displayed on
the top of the screen. All calculations will use the specific gravity
entered during this step. To remove the “D” press the
Auto/man key again. Once the “D” is not displayed, all
calculations will use the specific gravity of water (1.00)
regardless of whether another density was programmed or not.
Refer to Application setup mode for additional information.
Communications
If the 844-AB has been upgraded and is communications compatible,
a variety of communications options can be entered. Choices
available include the default of no communications “no com”,
contractor printing ”cnt prt” , user printing “usr prt”, global positioning
system communications capability “gps”, downloading to a pc ‘on-
the-go’ capability “log” or PC link “pc” (not used).
Figure 45: Communications settings
COM
1 2 3 4 5 6 7 8 9 10 11 12
If the 844-AB has not been upgraded with the communication
package, no change is required. If a change is necessary, press the
Plus or Minus keys to select the type of communication used.
Press the Programme key to accept the value and advance to the
beginning of System Setup mode.
Faces per section setting (HC mode only)
As HC mode calculates working width based on the number of faces
sprayed by each section. Additional steps are required to setup these
values.
Figure 46: Section 1 Faces settings
1
1 2 3 4 5 6 7 8 9 10 11 12
fA[e 1
se[
Use the Plus or Minus keys to adjust the value. This step will
repeat for each section. Press the Programme key to advance
to the next section. The number of sections available is determined
within the OEM setup options.
Figure 47: Section 7 faces settings
1
1 2 3 4 5 6 7 8 9 10 11 12
fA[e 7
se[
After cycling through all sections, press the Programme key to
advance and return to the first programme step.