
Fieldware for The Legacy 6000
Software Version 2.11
C-1
Appendix C - NH3 Application
Appendix C - NH3 Application
When using the NH3 mode review the settings below to ensure the Cal # and Density have been
entered correctly. The Cal # is located in PCM setup under Primary Sensor Tools. The Density
value is accessed from the ARM launcher page in Product Setup.
NH3 Application Cal#
For All NH3 applications the Cal # units should be entered in Pulses / Gallon. The Cal # units DO
NOT change even if the displayed units are in (lbs. of NH3 / acre) or (lbs. Actual N / acre).
Density for NH3 and Actual N
Density will determine the units of the applied and displayed rate (lbs of NH3 / acre or lbs of actual
N / acre) in real-time applications. If the operator wants to apply and display the rate in lbs of NH3
/ acre, the operator would enter a density of lbs of NH3 / gal. If the operator wants to apply and dis-
play the rate in lbs of Actual N / acre, the operator would enter a density of lbs of Actual N / gal.
NOTE: Temperature affects the Density. Use the chart below to locate the correct value (Figure
1-1). Use the temperature or tank pressure column to determine the correct density.
Example:
Cal # - pulses / gal
Operator wants to enter and display pounds of actual N / acre. If the temperature is 65
o
F, density
would be entered in Product Setup as 4.19 lbs of actual N / per gal.
NH3 is 82% Actual N by weight
1gal NH3 @ 60
o
F = 5.15lbs x .82 = 4.22lbs of Actual N / 1 gal of NH3
Figure 1-1: Density Table
°F °C PSI bar NH3 lbs/gal NH3 Kg/L N lbs/gal N Kg/L
0 -18 15.7 1.1 5.53 0.66 4.54 0.54
10 -12 23.8 1.6 5.47 0.66 4.49 0.54
20 -7 33.5 2.3 5.41 0.65 4.44 0.53
30 -1 45 3.1 5.34 0.64 4.37 0.53
40 4 58.6 4 5.28 0.63 4.33 0.52
50 10 74.5 5.1 5.21 0.63 4.27 0.52
60 16 92.9 6.1 5.15 0.62 4.22 0.51
65 18 103.1 7.1 5.11 0.61 4.19 0.5
70 21 114.1 7.9 5.08 0.61 4.17 0.5
75 24 125.8 8.7 5.04 0.6 4.13 0.49
80 27 138.3 9.5 5.01 0.6 4.11 0.49
85 29 151.7 10.5 4.97 0.6 4.08 0.49
90 32 165.9 11.4 4.94 0.59 4.05 0.48
95 35 181.1 12.5 4.9 0.59 4.02 0.48
100 38 197.2 13.6 4.87 0.58 3.99 0.47
Properties Of Liquid Ammonia At Various Temperatures
Temperature Pressure Liquid Densit
lbs /
al of NH3
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