Our EC-5 is a simple circuit board sensor for measuring soil or substrate moisture. This capacitance sensor gives readings in volumetric water content, or VWC, which is a percentage of moisture as compared to overall volume. These sensors can be installed out of the box with an accuracy of ±3%, or custom calibrated to your soil or substrate to hone in the accuracy even further. Optimal moisture levels for plant growth and performance will vary depending on the composition of a soil or a substrate.

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  • ACCURACY Volumetric Water Content (VWC): ±3% in typical mineral soils with solution electrical conductivity < 10 dS/m; soil or substrate specific calibration ±1–2%
  • RESOLUTION 0.1% VWC in mineral soil; 0.25% VWC in rockwool
  • SENSOR DIMENSIONS 8.9 cm x 1.8 cm x 0.7 cm
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Product Overview
Overview of the EC-5 
  • Plugs into Em50 Series Logger
  • 5cm prongs
  • Measures Volumetric Water Content