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Mirus for H2/H3 Graingage User's Guide
Calibrate High Moisture Corn on an EM Moisture Curve
When calibrating with high moisture corn samples, some moisture curves do not follow
a linear voltage relationship. HarvestMaster recommends manually adjusting the upper
half of moisture curves with grain samples above 26%.
To do this type of adjustment, start by using samples below 26% moisture to create a
base curve as described in Chamber Calibration.
Once you have a base curve, use 3–5 samples (multiple samples required) that are 26%
and above to manually adjust the top half of the curve:
1.
With the moisture curve open, cycle samples above 26% through the GrainGage
3–5 times each. Average the moisture readings for each sample.
2.
Calculate the moisture percentage offsets.
The offset is the difference between the benchtop sensor's moisture
measurement and the GrainGage's moisture measurement.
For example, Sample One has the following moisture measurements:
Benchtop sensor: 33%
GrainGage: 31.8%
The offset would be 33% − 31.8% = +1.2%
3.
If the average readings of the higher moisture samples do not match the
moisture curve, average all the sample offsets.
For example, if your benchtop sensor says Sample One is +1.2%, Sample Two is
+0.8%, and Sample Three is +1.0%, the average offset is +1.0%.
4.
Open Mirus.
5.
Go to Setup > H2 or H3 GrainGage > Moisture Curves.
6.
Select the moisture curve you want to test.
7.
Tap the edit icon
5. Chamber Calibration
.
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