Gason 5030 Series, Руководство оператора

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Page 14 Appendix
Appendix 1. Setting your Spreading Rate.
What affects the application rate of your Transpread Spreader ?
1)
Material Density, usually expressed as relative density.
This is a comparison of weight to volume. Imagine a table tennis ball and a golf ball, they are of
a similar size and volume but the weight of a golf ball is far greater. This means that a golf ball is far
more dense than a table tennis ball. In spreading terms this means that to spread a similar weight of
materials of differing densities the volume of material spread must change. To spread accurately you
must know the density of the material you are spreading. The rate charts shown in this appendix are
referenced to material density.
2)
How a material flows.
Materials of the same density can have different flow characteristics, for example, take the charts
included in this section for Hydro Extran and Kemira Nitraprill. Both materials have the same
density but with the same door opening far more Nitraprill will come out than Extran. This is due to
the prill size and the ease with which it will flow. Chain type spreaders have a far more accurate
feed system than a flat belt spreader. A chain will also break up small lumps that will sit on a flat belt
and block a door opening giving an incorrect rate. Compounds will not flow as readily as prills as they
tend to be more angular in shape compared to the spherical prills. Humidity and dampness can also
affect the way a material flows as can the age of the fertiliser. In general a chain system is not subject
to the variations due to material that a belt spreader is.
This means that although guideline charts are included in this section it is important that the user
calculates their own application rate from the formula provided.
3)
Driving inaccurately.
Although your Transpread unit has a ground related conveyor belt, driving inaccuracies can affect
your rate per Hectare. If your machine is set for a 12M bout width any variation from this in your
rows will be reflected in the error of rate of application. i.e.. If you drive at 10M instead of 12M the
error in your rate will be 12/10 x 100 = 120% of your required rate per hectare. Like wise if you
drive at 14M instead of 12M the error in your rate will be 12/14 x 100 = 86% of your required rate
per hectare. Errors in this region are likely to cause stripping and are costing you money.
REMEMBER! IT
PAYS
TO DRIVE ACCURATELY.
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