Raven Industries SCS 450 - Manual (Page 12)

Chapter 2
8 SCS 450 Serial Interface Installation & Service Manual
Calculate the Rate 1 and Rate 2 Cal Values
Determine the application rate at which the chemical is to be sprayed, and then consult with your Raven dealer
to verify that the spray nozzles are capable of applying at that rate. To determine which spray nozzles to use
with the sprayer, the following information must be known:
With this information, calculate the volume per minute, per nozzle using the following formula:
Refer to the following chart to determine which nozzle to use based on the desired output.
Brake Point
Sets the percentage away from target rate at
which the control valve motor begins turning at
a lower rate.
0 - 9
0 = 5%
1 = 10%
9 = 90%
Dead Band
Allowable difference between the target and
actual application rate, where rate correction is
not performed.
1 - 9
1 = 1%
9 = 9%
Nominal Application Pressure PSI (kpa)
Target Application Rate GPA (lit/ha)
Target Speed MPH (km/h)
Nozzle Spacing inches (cm)
GPA (lit/ha) x MPH (km/h) x inches (cm) = GPM (lit/min)
5,940 [60,000]
Digit Description Range Range Definition