BS EN 13739-2:2011 pdf download

BS EN 13739-2:2011 pdf download.Agricultural machinery —Solid fertilizer broad casters and full width distributors -Environmental protection Part 2: Test methods.
4 Test conditions
4.1 Machine for test
4.1.1 General
During the tests the machine shall be used according to the instruction handbook
4.1.2 Transverse test
The machine shall be driven with a forward test speed WhiCh does not vary by more than ± 0,1 km/h and which Is within the range of (4±0.4) km/h.
The number of runs for each measurement shall be two.
The flow adjustment using 4 km/h shall be set to correspond to the flow rate obtained at a forward driving speed of 10 km/h.
If the machine is not designed to be used at a forward speed of 4 km/h, the forward test speed shall be within the range of (6± 0,4) km/ti or (10 ± 0,5) km/h or (12 ± 0,6) km/h and the number of runs shall be four resp five resp. 6 with the flow rate set according to the forward speed. The test speed shall also in this case not vary by more than ± 0,1 km/h from run to run within each test
The forward speed, PTO ratio and disc speed shall be stated an the test report.
The distributing mechanism shall be at the height above the fertilizer-collecting containers (the upper edge of
the containers) equal to that recommended by the manufacturer for work above the ground or the crop.
4.1.3 RotatIng test
The angular velocity of the rotating device shall be set at 3°/s.
One rotation of the rotary device shall be done for each measurement.
The flow adjustment shall be set to correspond to the flow rate obtained at a forward driving speed of 10 km/h.
The PTO ratio and disc speed and angular velocity shall be stated in the test report.
The d.stnbuting mechanism shall be at the height above the fertilizer-collecting containers (the upper edge of the containers) equal to that recommended by the manufacturer for work above the ground or the crop.
4.2 Test materials
Unless the instruction handbook states otherwise, test materials shall be used from the following groups and as specified in 6.3 to 6.10:
a) a granular fertilizer with bulk density> 0,9 kg/dm3
b) a granular fertilizer with bulk density > 0,9 kg/dm;
C) a pfllled fertilizer with bulk density> 0,9 kg/dm;
d) a prilled fertilizer bulk density > 0,9 kgldm3
e) a compacted fertilizer.
90 % to 110 % of the expected amount of test material shall be collected.
This requirement is checked by comparing the application rate calculated from the collecting containers with the application rate obtained in the flow rate test, when using test material from the same batch in both measurements.
5.3 Rotating test
5.3.1 Measurement of the angular position of the spreader
The measurement of the angular position between the row of collecting containers and the spreader axis shall
be done with a sensor. The precision of this angle measurement shall be better than 0,1’.
5.3.2 Data acquisition device
The angular position of the spreader, the fertilizer mass into the spreader hopper, the brUiser mass into each of the collecting containers, and the acquisition and storage time shall be measured and registered with a frequency higher or equal to 5 Hz. The response time of the measurement devices should be at least 0.25.
Data shall be filtered with a Bessel lowpass at 0.5 Hz
5.3.3 Devices for receiving fertilizer for spread pattern distribution
The collecting containers shall have top external dimensions of 500 mm x 500 mm and precautions shall be taken to minimise spilage by ricochet out of the containers.
NOTE The wall thickness at the top edge should be equal smaller than 1.5 mrn An exampie of a funnel shaped container is shown in Figure 8.1.
The rotation axis of the rotating carrier shall be located on the axis belween the containers centres of the containers’ row. See Figure 4.
90 %-1 10 % of the expected amount of test material shall be collected This requirement is checked by comparing the application rate calculated from the collecting containers with the application rate obtained in the flow rate test when using test material from the same batch In both measurements.
5.4 Test site
The tests shall be carried out on an even, horizontal and hard surface. The air velocity shall be less than 2 mIs during the tests. The air humidity shall be less than 65 % and the temperature 10 C to 25 ‘C.
The actual values of air humidity, temperature and air velocity shall be stated in the test report. If tests are done outdoors, this shal also be stated In lhe test report.