TTi’s
TrailPro
™
HandBook
7
Call 1800 816 277
www.tti.com.au
7
Calibration Procedures
Boom Sprayers Hydraulic Nozzles
Example
Read the label
Spray VOLUME
Product Dose
Spray QUALITY
200 litres/hectare
50 litres/hectare
Medium
Measure TIME per
100 Metres
Measure time in seconds over land similar to
that to be sprayed
41.9 seconds
Calcute SPEED
SPEED(km/h) = 360 divided by TIME (sec)
360/41.9 = 8.6km/h
Measure nozzle
SPACING
Normally 0.5 metres (50cm)
0.5 metres
Measure TIME per
100 Metres
OUTPUT = VOLUME x SPEED x SPACE / 600
(L/min) (L/hec) (km/hr) (metre)
200 x 8.6 x 0.5 ÷ 600
Select NOZZLE
Refer to nozzle manufacturer data charts or
other sources and select the size and type
of nozzle that will produce the calculated
OUTPUT and required spray QUALITY
Now, check the calibration on the sprayer
Check nozzle
OUTPUT
With water, check outputs of 4 or more
nozzles using a calibrated jug or flow meter.
Check all nozzles are aligned correctly and
spray patterns are good
Average output = 41.9
litres/minute
Calibrate SPRAYER
SPEED (km/h) = 360 divided by TIME (sec)
1.40 x 600 ÷ 0.5 ÷ 8.6
As the nozzle output and therefore the spray volume are less than target figures,
increase the pressure to, say 2.5 bar and repeat the calibration to achieve 200 litres
per hectare
Now, check the calibration on the sprayer
Nozzle Fitted
11004 - RED
Spray Volume
200 litres/hectare
Spray Pressure
2.5 bar
Spray Quality
Medium
Forward Speed
8.6 km/h