7.3.1 Calibration menu

Figure 1.

Display

  1. Air pressure

  2. Number of doubles; 1

  3. Amount of seed

  4. Output quality

  5. Number of skips; 2

  6. Number of seeds/ha or seed spacing (depending on calibration method)

Calibration menu settings (Values are displayed either in metric or imperial units, depending on which one has been selected in the general settings menu).

Note

To choose the seed disc and settings for the metering unit, refer to the chapter “Drilling Recommendations” in the machine manual.

  1. Select calibration method. Enter the spacing between plants in the upper row or the number of seeds in the lower row. (The selected calibration method is shown in the operations menu.)

  2. Select which of the row units is to be calibrated (i.e. the row that has a calibration bag). If the calibration is to cover all row units, select ON (default setting).

    If the calibration is to be done individually for only one row unit, select OFF.

  3. Enter the number of holes on the seed disc installed in the metering unit. If the disc contains more than 70 holes, deviations from the specified feed rate are measured in percentages instead of in skips/doubles.

  4. If the expected driving speed is, for example, 12 km/h, the calibration must be done for a speed of 12 km/h.

  5. Calibrate

Calibration

  1. Figure 2.

The calibration is normally carried out on one seed feed housing unit and the values are automatically carried over to the others. If desired, it is also possible to calibrate each seed meter individually.

  • Check that there is seed in the seed hopper; the depth of seed should be at least 15 cm.

  1. Place a calibration bag under the feed for the seed meter to be calibrated.

  2. Start the fan; the value is shown in field (A). See Figure 1. Check that there is the right amount of air pressure (3.5 kPa) in the seed metering unit.

  3. Enter the values in the calibration menu.

  4. Start calibration using the (K) button, see Figure 1 and hold it depressed until the seed output counter shows at least 200.

  5. Read the proportion of skips and doubles . If any value is too high, adjust the singulator.

    • To reduce the proportion of doubles, reduce the singulator dial’s set value.

    • To reduce the proportion of skips, increase the singulator dial’s set value.

      Repeat points 4 to 5 until the required accuracy has been achieved.

    When the machine is equipped with a seed disc with more than 70 holes, read the percentage deviation from the application rate in the output quality field (D) see Figure 1 and adjust the singulator dial’s set value to minimise the deviation.

  6. Exit the calibration menu using , or go directly to calibration of another unit.

  7. Remove the calibration bag and pour the seed back into the hopper.

1 not available if the machine is equipped with a seed disc with more than 70 holes.
2 not available if the machine is equipped with a seed disc with more than 70 holes.