Instructions Manual

Pub. #OM17-MSP3
4-24
OM Data Quality
Check depth of sensor – Make a couple of trial passes to make sure the sensor is running at the
proper depth. Recommended depth is 2-3 inches.
Add weights or adjust down pressure on row unit if needed
Also make sure the row unit side depth wheels and disks are rotating freely, and are clear of
excess mud and crop residue.
For row unit adjustments see page 4-22.
Monitoring the window –Observe OM readings at row ends when unit is raised, if they are not
within 10% of the initial raised readings, check windows for mud, smearing, and/or window
breakage.
Varying Field Conditions – In order to have high data quality the field conditions need to be the
same for an entire data set. Any of the following can affect data quality: in-field soil temperature
and moisture difference, change in down pressure or depth gauge wheel setting. If conditions
change, start a new file.
Figure 66 is an example of how these items can affect data quality.