21
21 Product calibration
Basic calibration guides for Slug Pellet, Grass Seed and Rape
Seed application shown on pages 20 and 21
RECCOMENDED Individual product calibration;
WORKING WIDTH
Firstly establish the working width required or maximum spread width possible with the granules or
seed being applied
Working in a safe area and ideally on a hard surface so that product is visible on the ground and can be swept up
after calibration work has been completed
Place a minimal amount of slug pellets, seed or granules in the hopper .
NOTE It is the responsibility of the operator to ensure that no other persons enter the spreading
zone whilst the machine is in operation and the appropriate personal protection equipment be worn
for the material being applied
Always observe all application standards and guidelines provided by the manufacturer of any product
as some products may be are toxic !
Switch on the main power switch ON to operate the spinning disc . Switch the feed shutter switch ON for a few
seconds to allow enough product to be broadcast to establish the working width allowing for a small overlap.
APPLICATION RATE
Place a minimal amount of slug pellets, seed or granules in the hopper - typically just a few kilograms
The disc needs to be ON and turning and the feed shutters are switched ON and OFF to start and stop the catch
test. If using a Vario control, the disc speed can be lowered when calibrating providing it is sufficient to throw the
pellets clear of the disc.
OPTIONAL Calibration Chute recommended for this operation to limit exposure to product being thrown from the
spinning disc
Finish by carefully tipping the Fan Jet forwards on its tipping base plate and gently shaking to empty any product
or seed left in the chute and under the disc, into the bag before weighing (or removing the chute when finished)
Method
Use the following formula to establish the flow rate – this is a 1 minute catch test universal for all machines,
products, widths and speeds.
Application rate (kgs/ha) x forward speed (kph) x spread width (metres) = Flow rate in kgs per min
600
Example 1.
The required application rate is 25 kilograms per hectare. The target forward speed is 10 kilometres per hour.
The bout width is 6 metres wide.
25 kgs/ha x 10 kph x 6 metres =
2.5kgs
per
minute
flow rate
600
Example 2.
The required application rate is 5.5 kilograms per hectare. The target forward speed is 12 kilometres per hour.
The bout width is 4.25 metres wide.
5.5 kgs/ha x 12 kph x 4.25 metres = 0.
467kgs
per
minute
flow rate
600
Содержание FAN JET PRO 130
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