EXACTRIX
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                Compare NH3 Manifolds
Chart 2

  • All components utilized in the test are standard, off the shelf production items of Exactrix Global Systems

  • Precision and selected orifices with less than 1% port to port variance are available from Exactrix

  • Injection orifices should be checked every 500,000 gallons of NH3 applied

  • Testing reflects dual stage manifold operation in the secondary stage

Exactrix
50 71 20 20 14 45 24 29 10 9 23
40 5041 400 400 196 2025 576 841 100 81 529
          Sum 10189x.1=1018.9 square root=31.92 standard deciation
   30              Standard Manifold Testing, Iowa State/Seccessful Farming
   20        61       70     79     28      21     70        70     103    21    45     5   21   28  

               3721    4900   6241  784  441   4900   4900  10609   441  2025  25  441
              Sum 4021x.083=3337.5, square root=57.7 standard deviation

 

Coefficient of Variation for Standard NH3 Manifolds Is 41.2%  Standard deviation  57.7

Coefficient Of Variation For Continental Vertical Dam is 21.2%
Standard deviation is 37.92

 

Coefficient Of Variation For Exactrix 3.1%
Standard deviation for the test is .1414

Tested Delivery Systems:
Coefficient Of Variation

Exactrix................................3.1%
New Sprayer...........................6%
Airseed Urea.....................8-14%
Vert. Dam NH3 Man...21 to 25%
Standard NH3Man......34 to 42%

PAMI Rates any delivery system above 15% CV as unacceptable. Testing information and criteria is also available from the TVA and ASAE. Test information can be ptesented as Average Difference of the Mean or Coefficient of Variation. ASAE and PAMI have adapted CV. Iowa State/SF have adapted ADM.

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