Hydra probe

Measurement of soil water content, soil temperature and electrical conductivity

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Determines soil water content, soil temperature and electrical conductivity (optional) manually and in combination with data loggers

  • Simultaneous measurement of soil water content, temperature and electrical conductivity (optional)
  • Output of all readings via the SDI-12-protocol
  • Good agreement with thermogravimetrically determined water contents of soil sample rings (data on request)
  • Stored calibrations of different soil textures
  • Use with data loggers or in manually with smartphone and additional battery (Mobile Hydra-Set)
  • Versions with analog signal or RS485 optionally available
Measuring range  
Water content: Oven dry to saturated
Temperature: 0,01 ... 1,5 S/m (optional)
Electrical conductivity -10 ... +65 °C
Output signal (Standard) SDI-12
Operating voltage 9 ... 20 V DC
Accuracy (according to manufacturer)
Water content: ± 3 % vol.
Temperature: ± 5 mS/m
Electrical conductivity: ± 0,1 °C
Power consumption 30 mA
Dimensions  
Length: 124 mm
Diameter: 42 mm
Rod length: 57 mm
Cable length 7,5 m;other lengths available on request