Table of Contents
Advertisement
16
6.5. Select the Correct Droplet Size
The correct spray droplet size must be selected for the application. The factory
settings for the AU8115MS are designed to produce the smallest possible droplet
size. For some spray applications, however, it may be more appropriate to select a
larger size of droplet. The size of the spray droplets produced by the spray head is
mainly determined by the rotational speed of the atomiser and decreasing the
rotational speed will produce larger droplets. The droplet size is also influenced the
properties of the spray mix.
Due to the loading effect of liquid flowing through the atomiser, the speed of rotation
(and therefore droplet size) will be affected by the liquid flow rate. The relationship
between atomiser blade angle setting, flow rate and atomiser rotational speed is
given in the table and graph below.
Atomiser Speed (RPM)
Flow
Blade Setting Number
(l/min)
1.75
0.00
11500
8700
0.25
10800
8600
0.50
10500
8300
1.00
9800
7850
1.50
9600
7600
6.6.
Changing the Droplet Size
The rotational speed of the atomiser is determined by the angle of the fan blades. A
fine blade angle (corresponding to a smaller setting number in the figure below)
gives a high rotational speed and small spray droplets. A coarser angle (larger
number) gives larger droplets.
The procedure to change the blade angle is as follows:
1.
Remove
the
securing the rear casing of the
spray head. Slide off the rear
casing.
2.
Rotate the atomiser so the
setting marks on a fan blade
can
be
seen
inspection hole in the support
ring.
MICRON AU8115MS VEHICLE MOUNTED SPRAYER
2
4
6
4750 2700
4600 2650
4550 2600
4400 2540
3900 2400
two
screws
through
the
Fig. 10 – Fan Blade Adjustment
Advertisement
Table of Contents
