Manual Calibration Using Excel - Juniper HarvestMaster GRAINGAGE H2 STATIONARY User Manual

H2 Stationary GrainGage User's Guide
12. Average the sample offsets.
For example, if your benchtop sensor says Sample One is +1.2% more than the GrainGage measurement
and Sample Two is +0.8%, the average offset is +1.0%.
13. Add the average adjustment to each moisture point with the exception of the 0 and 1 moisture points
(never adjust 0 or 1). Subtract for a negative average offset. Do not adjust voltages.
Add or subtract
the offsets here.
As needed, add or
remove points in the
curve here.
In the example above, readings from the benchtop sensor indicate that the samples have, on average, 1%
higher moisture than the percentages in the previously calculated moisture curve.
The following tables illustrate this type of adjustment:

4. 2.6 Manual Calibration Using Excel

HarvestMaster provides a spreadsheet for creating a two-point calibration online. It can be downloaded
at www.harvestmaster.com/data/files/mirus/EM2 Sample Curves
spreadsheet for creating the curve.
H2 Stationary GrainGage Calibration
Original Curve
Moisture Voltage
0.0 0.000
1.0 0.400
8.0 0.793
11.0 0.892
14.0 0.990
17.0 1.089
20.0 1.187
36.0 1.713
40.0 1.845
Adjusted Curve
Moisture Voltage
0.0 0.000
1.0 0.400
9.0
0.793
12.0
0.892
15.0 0.990
18.0 1.089
21.0 1.187
37.0
1.713
41.0
1.845
2018.xlsx. Follow the instructions in the
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