Italia Star Com Due BISONTE BTA-MD600Y, User Manual

Page: 129 / 150

Before starting work it is necessary to determine the following points which have an influence on the liquid
discharge rate per unit area and the
distribution of the active ingredient in the crop.
Working width
Walking speed
Unit's discharge rate per unit time
Position of spray tube (angle from horizontal)
Preparations for mistblowing
Among other factors, the working width is dependent on the crop and is determined by the distance betwee
n the rows of trees, shrubs and bushes. In the case of low-growing crops, the best working width is up to 4
meters, but can be up to 5 meters if the user adjusts his walking speed accordingly. The working width
should be marked with stakes to help avoid deviations.
The
walking speed can vary greatly from user to user. For this reason it is advisable to do a trial run with
the machine fueled and the container filled with water, and make a note of the time taken (stop watch).
While walking, the spray tube should be operated (swung back and forth) as it will be during the real run
described below.
This trial run is also used to check the selected working width, i.e. the greater the distance, the slower the
walking speed. Check the distance walked in one minute.
Rule of thumb:
Normal length of stride is about 0.7 to 0.9 m, but can be up to 1.0m. Measuring the distance is better than
counting the number of steps. Dividing the distance in meters by the time in minutes gives you the walking
speed in meters per minute(m/min).
The
discharge rate per unit time
(l/min) is infinitely variable on the machine's metering unit. The required discharge rate is determined by the
area to be treated,the quantity of solution,the working width and the walking speed. It can be calculated
using the following equation:
V
V =
(l) (m/min) (b/m)
(I/min)
A (m
2 )
x x v
a
c
b
Where:
V = Quantity of solution
V = Discharge rate b = Working width A = Area v = Walking speed
a
b
c
Important:
All values must be inserted in the equation in the units specified.Note that hectares have to be mulitiplied
by 10,000 to obtain square meters.
Assuming a working width of 3 m and a walking speed of 60 m/min (1 m/s), the calculation of the above
example would be as follows.
In this case the metering unit on the mistblower would have to be set to 2.7l/min. lf the value is not marked
directly on the scale, select an intermediate settion. The settings for the metering unit and the associated
discharge rates can be taken from the instructions for use.
541 x 60 m x 3 m
1 min x 3,600 m
2
= 2.7 l/min
www.italiastar.ro
info@italiastar.ro
004/021.433.03.27
Italia Star Com Due S.R.L.
129