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844E Sprayer Control
Program Speci c Gravity
Liquid Specifi c Gravity (Density)
Default = 1.00
While in the Liquid Specifi c Gravity (Density)
Programming Step, the D symbol, will be fl ashing at
the top of the console display.
The default value of “1.00” corresponds with the
specifi c gravity of water and is correct for most
pesticide applications. Occasionally some spray
solutions, such as fertilizer, have different densities.
If you are using such a material, a new value should
replace the default value. The chart to the left can help
you determine the specifi c gravity of other solutions.
To change the default value to your new value, use
the or keys to change the value in the display.
Pressing the and keys simultaneously will clear
the value to zero. To accept the value and advance to
the next programming step, press the key. If the
solution that you are using can not be found on the
chart to the right.
Weight of Solution Per Gallon
Specifi c Gravity
7.0 lb 0.84
8.0 lb 0.96
8.34 lb - water 1.00
10.0 lb 1.20
10.65 lb - 28%N 1.28
10.85 lb - 30%N 1.30
11.0 lb 1.32
12.0 lb 1.44
14.0 lb 1.68
NOTE: Water weighs 8.34 lb/gal or 1 Kg/L
The Specifi c Gravity can be calculated as follows:
NOTE: To activate this specific gravity number, while in the Application Setup Mode, press the Auto/Man key so
the “D” is displayed at the top of the screen. When the “D” is displayed, all calculations performed will use
the specific gravity programmed in this step. To remove the “D” press the Auto/Man key. When the “D” is
not displayed all calculations performed will use the specific gravity of water (1.00) regardless of whether
another density is programmed into this step or not.
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