23 Mar Drill & Drop TriSCAN Explained
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- March 23, 2021 Create Date
- March 23, 2021 Last Updated
This paper from Sentek's R&D scientists will assist in understanding TriSCAN sensor results to observe trends in ionic movement within the soil profile.
The calculation of Volumetric Ion Content (VIC) is achieved through the use of mathematical models. The output is a unitless value derived from soil Electrical Conductivity (EC). The mathematical relationships are based upon measured results of two sensor frequencies with changing water and salt content.
There have been two VIC models developed over the years, designated First and Second.
In the first four years of production of the Drill & Drop probe (2015 – 2019), the First Model was used exclusively. This was the same model used in all large (50mm diameter) sensors.
The Second Model was released in 2019 and encoded into the new Internal Interface Drill & Drop probe. These probes have a serial number greater than 13,000.
The VIC data can be plotted separately or in combination with VWC and temperature data to observe trends in ionic movement within the soil profile.