Calculating "Rate Cal - Raven SCS-330 Installation & Service Manual

5.

CALCULATING "RATE CAL"

Determine the application rate at which your chemical should be sprayed. Consult
with your Dealer to ensure your spray nozzles are capable of applying at this rate.
In determining which spray nozzles to use with your sprayer, you must know:
1)
2)
3)
4)
From this information, calculate the volume per minute, per nozzle as follows:
GPM [lit/min]
EXAMPLE: EXAMPLE: EXAMPLE:
EXAMPLE: EXAMPLE:
GPM = 20 GPA x 5.2 MPH x 20 inches
Using GPM .35 and pressure 30 you would select tip number XR8004 from the chart
below, since it comes closest to providing the desired output.
VERIFYING FLOW RATE LIMITS: VERIFYING FLOW RATE LIMITS: VERIFYING FLOW RATE LIMITS:
VERIFYING FLOW RATE LIMITS: VERIFYING FLOW RATE LIMITS:
The flow rate of spraying must be within the range of that specified for the Flow
Meter included.
FLOW METER MODEL
RFM 5
RFM 15
RFM 55/55A
RFM 100
RFM 200/200 Poly
RFM 400
Nominal Application Pressure
Target Application Rate
Target Speed
Nozzle Spacing
= GPA [lit/ha] x MPH [km/h] x inches [cm]
1) Application Pressure
2) Target Application Rate
3) Target Speed
4) Nozzle Spacing
5,940
5,940 [60,000]
= .35
FLOW RANGE
0.05-5 GPM [0.2-18.9 lit/min]
0.3-15 GPM [1.1-56.8 lit/min]
1-55 GPM [3.8-208 lit/min]
3-100 GPM [11.4-379 lit/min]
15-200 GPM [56.8-757 lit/min]
25-400 GPM [94.6-1514 lit/min]
12
___ PSI [kpa]
___ GPA [lit/ha]
___ MPH [km/h]
___ inches [cm]
= 30 PSI
= 20 GPA
= 5.2 MPH
= 20 inches