| Date: |
2021-03-17 |
| From: |
Lab - none |
| To: |
Lab - none |
| Title: |
Calibration |
| Notes: |
After looking at the data recorded from 2021-03-17 to 2021-10-06 it seemed that this probe was reading too low in the spring and too high in the fall. Most years the soil gets completely saturated in the spring and completely dry in the fall. If you take the max and min values from all years they are very similar. Min: 473mV STDEV=6.8mV, Max: 913mV STDEV 24.8. Then we can use these to scale this sensor's min and max with this year's data and we get
Corrected (mV) = raw (mV) * 1.272 -187.73
And using the manual's default conversion values for mineral soil (0.05 and -5), the total conversion is:
%m = mV * 0.636 + 4.39
|
| Entered by: |
Joe Verfaillie |
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