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Of
greatest interest to producers, fertilizer dealers, and manufacturers of
tool bars and airseeders is the high port to port accuracy developed by the
Exactrix Direct Injection System.
-
Port
to port accuracy above vapor pressure is 2.35%
ADM
( 3.1% CV )
-
Port
to port accuracy below vapor pressure is 4.1%
ADM (
4.8% CV )
-
Exactrix
safety filter performance is nominal.
-
Injection
pump repeatabilty was highest with a transfer pump at 2% of theoretical
displacement.
As
a point of interest commercial fertilizer delivery systems have published
port to port variances on level ground of:
-
Exactrix NH3 System........3.1% CV
-
New
Sprayer.....6% CV
-
.Airseeder,
Urea..............................................8% to 14% CV
-
Vertical
Dam NH3 Manifold.........................21% to 25% CV
-
Standard
NH3 Manifold................................34% to 42% CV
PAMI and rates any system above 15% CV
as unacceptable.
-
Footnote: ADM is the average difference of the mean used by Iowa State and Successful
Farming Magazine. CV is the co-efficient of variation used by ASAE
and PAMI. CV is regarded as the best way to compare all fertilizer
systems.
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