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Chapter 4
Adjusting the Meter Cal
Locate the meter cal value printed on the tag attached to the AccuFlow™ flow meter. This value will be referred
to as the "original meter cal." The original meter cal can be adjusted to display application rates in either
pounds of actual nitrogen per acre (lbs(N)/acre), or kilograms of actual nitrogen per hectare (kg(N)/ha). If the
meter cal label displays an NH
Note:
All volumes will be displayed in pounds [kilograms] of actual nitrogen. To properly control the
application of anhydrous ammonia, enter the target application rates as pounds [kilograms] of
actual nitrogen per acre [hectare] or lbs(N)/acre [kg(N)/ha].
Use the following formulas to adjust the original meter cal for the desired display preferences:
(lbs(N)/acre) Original Meter Cal / 4.22 = Adjusted Meter Cal
(kg(N)/ha) Original Meter Cal / [0.506] = Adjusted Meter Cal
Round the calculated value to the nearest 3 digit whole number and enter the value as the meter cal on the
Raven console.
For Example:
Given an original meter cal of 720 [190].
From the calculated values, round the adjusted meter cal value to 171 [375] and enter this value on the Raven
console.
Adjusting the Rate Cal
Enter the target rate in actual pounds [kilograms] of nitrogen (N) per acre [hectare].
Calculating the Required Capacity
To ensure that the desired application rate (in pounds [kilograms] of actual nitrogen per minute) does not
exceed the AccuFlow system capacity, the required capacity of the application must be verified.
Using the following formula to calculate the required capacity:
Target Application Rate x Target Application Speed x Implement Width = lbs[kg](N)/min
Note:
Be sure to enter the target application rate in pounds [kilograms] of nitrogen per acre [hectare] and
the implement width as calculated in the "Adjusting the Boom Cal" section on page 25.
26
calibration value, the meter cal does not need to be adjusted.
3
(lbs(N)/acre) 720 / 4.22 = 170.62
(kg(N)/ha) 190 / [0.506] = 375.494
5940[60,000]
AccuFlow™ and AccuFlow HP™ Installation & Operation Manual
(EQ 2)
(EQ 3)
(EQ 4)
(EQ 5)
(EQ 6)
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