The 10HS determines volumetric water content (VWC) by measuring the dielectric constant of the soil using capacitance/frequency domain technology. Using a 70 MHz frequency minimizes salinity and textural effects, making the 10HS accurate in most soils. Factory calibrations can be used in most typical soils with a saturation extract EC of 10 dS/m.


  1. Use the 10HS to accurately measure water content where a large volume of influence is needed, with minimal salinity and textural effects in most soils.
  2. The 10 cm long 10HS has a ~1.3 liter area of influence. Reference our Application Note to see the idealized measurement volume of the 10HS.
  3. The 10HS’s analog signal means no-hassle integration with systems manufactured by other companies. An on-board voltage regulator allows the Decagon factory calibrations to be used with any excitation voltage between 3 and 15 V.
  4. The 10HS’s output can be set to dielectric for use with the Topp Equation or other dielectric-to-volumetric water content conversion equations.
  5. 5mm “stereo” plug, or stripped and tinned lead wires.
  6. Survival Temperature: -40 – 50°C

    1. Volumetric water content is the only measurement you need
    2. Simple sensor with excellent accuracy
    3. Large volume of influence


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