Duncan 67372, Owner'S Manual

Page: 24 / 59

22
Hectaremeter Settings Setup
Refer to the installation and operation instructions supplied with
your hectaremeter kit (1) for information on installation, calibration,
operation and servicing (Fig 15).
Table 6 gives the effective working widths for the various
machines depending on the machine size and the row spacing.
The calibration procedure described in the hectaremeter
handbook involves accurately measuring the circumference of the
tyre and entering and storing this value in the meter. The effective
sowing width also needs to be entered. For measuring the tyre
circumference and obtaining the rolling circumference of the tyre
refer
Recalculating the Constan t (Page 18).
Note: If under certain operating conditions a calibration check
indicates a significant difference in the rolling circumference of the
tyre, the hectaremeter should be recalibrated by changing the H1
setting for the period of operation under those conditions.
Fig 15
Table 6
1
Basic Calibration Procedure
(Continued)
Sowing Peas
Peas having the size and shape as illustrated in
Fig 13 (e.g. White Field Peas), can be sown without
problems with all Duncan Drills with this type of
metering wheel.
The flap should be set to a gap of at least “3” on the
flap setting lever (Page 15, Fig 3).
With these peas it should not be necessary to run the
agitator shaft.
Peas having the size and shape as illustrated in
Fig 14 (e.g. Green or Garden Peas), tend to bridge
inside the seedbox and do not flow freely.
This multi-faceted pea requires agitation for sowing.
Sowing Width
Row Spacing (mm) 180
Effective Working Width (m) 1.8
Fig 14
Fig 13