Stihl SR 450 Product Instruction Manual - Page 27

Calculating Required, Quantity of Solution

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64 5 N Rotate the nozzle (4) until the lugs (5) are covered. N Pull the nozzle (4) off the blower tube (6). Converting back to misblowing mode The conversion is carried out in the reverse sequence. Fitting the hose 2 N Push the hose with clamp (2) over the stub on the control handle. N Use pliers to squeeze the hose clamp together (2) until the retaining strip engages and locks. 0002BA038 KN 0002BA037 KN Calculating Required Quantity of Solution Determining surface area (m2) In the case of ground crops, simply multiply the length of the field by its width. The surface area of high-growing plants is calculated approximately by measuring the length of the rows and the average height of the foliage. The result is multiplied by the number of rows and then by two if both sides have to be treated. The surface area in hectares is obtained by dividing the number of square meters by 10,000. Example: A field 120 meters long and 30 meters wide has to be treated with a pesticide. Area: 120 m x 30 m = 3,600 m2 3,600 / 10,000 = 0.36 ha Determining quantity of active ingredient Refer to the instructions supplied with the active ingredient to determine: - Required quantity of active ingredient for 1 hectare (ha). - Concentration of active ingredient (mix ratio). English Multiply the required quantity of active ingredient for 1 hectare by the area determined in hectares. The result is the quantity of active ingredient required for the area to be treated. Example: According to the maker's instructions, 0.4 liters of active ingredient are required per hectare to obtain a concentration of 0.1%. Quantity of active ingredient: 0.4 (l/ha) x 0.36 (ha) = 0.144 l Determining quantity of solution The quantity of solution required is calculated as follows: TW K x 100 = TB TW = Quantity of active ingredient in l K = Concentration in % TW = Required quantity of solution in l Example: The calculated quantity of active ingredient is 0.144 liters. According to the maker's instructions, the concentration is 0.1%. Quantity of solution: 0.144 l x 100 = 144 l 0,1 % Determining walking speed Carry out a trial run with the machine fueled and the container filled with water. Operate the spray tube (swing it SR 430, SR 450 25

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SR 430, SR 450
English
25
N
Rotate the nozzle (4) until the
lugs (5) are covered.
N
Pull the nozzle (4) off the blower
tube (6).
Converting back to misblowing mode
The conversion is carried out in the
reverse sequence.
Fitting the hose
N
Push the hose with clamp (2) over
the stub on the control handle.
N
Use pliers to squeeze the hose
clamp together
(2) until the retaining
strip engages and locks.
Determining surface area (m
2
)
In the case of ground crops, simply
multiply the length of the field by its
width.
The surface area of high-growing plants
is calculated approximately by
measuring the length of the rows and the
average height of the foliage. The result
is multiplied by the number of rows and
then by two if both sides have to be
treated.
The surface area in hectares is obtained
by dividing the number of square meters
by 10,000.
Example:
A field 120 meters long and 30 meters
wide has to be treated with a pesticide.
Area:
120 m
x
30 m
=
3,600 m
2
3,600
/
10,000
=
0.36 ha
Determining quantity of active
ingredient
Refer to the instructions supplied with
the active ingredient to determine:
–
Required quantity of active
ingredient for 1 hectare (ha).
–
Concentration of active ingredient
(mix ratio).
Multiply the required quantity of active
ingredient for 1 hectare by the area
determined in hectares.
The result is the
quantity of active ingredient required for
the area to be treated.
Example:
According to the maker’s instructions,
0.4 liters of active ingredient are
required per hectare to obtain a
concentration of 0.1%.
Quantity of active ingredient:
0.4 (l/ha)
x
0.36 (ha)
=
0.144 l
Determining quantity of solution
The quantity of solution required is
calculated as follows:
T
W
= Quantity of active ingredient in l
K
= Concentration in %
T
W
= Required quantity of solution in l
Example:
The calculated quantity of active
ingredient is 0.144 liters. According to
the maker’s instructions, the
concentration is 0.1%.
Quantity of solution:
Determining walking speed
Carry out a trial run with the machine
fueled and the container filled with
water. Operate the spray tube (swing it
0002BA037 KN
6
5
4
2
0002BA038 KN
Calculating Required
Quantity of Solution
T
W
x
100
=
T
B
K
0.144 l
x
100
=
144 l
0,1 %