eosFD soil CO2 flux

measure substrate CO2 flux via forced diffusion


a new method to measure soil CO2 flux

The eosFD is a revolutionary soil CO2 flux sensor that uses Eosense’s patented Forced Diffusion technology to measure soil CO2 flux directly. The eosFD is completely standalone—requiring only a minimal power source—delivering spatial freedom at any scale and opening up all sorts of possibilities for research.

  • Zero spatial constraints
  • Truly portable
  • High temporal resolution
  • Weatherproof
  • Low power requirements

FD technology has been tested and proven from pole to pole – surviving everything from meters of snowpack to frigid and sunless Antarctic winters.


how does the FD sensor work?

Eosense eosFD Poster



  • Dimensions (Ø x L): 10.2 cm x 25 cm / 4 in x 9.8 in
  • Mass: 1600 g / 3.5 lb
  • Operating temperature: -20 C to 50 C / -4 F to 122 F
  • Operating power – avg: <1.6 W
  • Operating voltage: 12 V DC
  • Outputs (analog): 0 – 5 V DC
  • Data Capacity: 65,000 measurements
  • Flux Range: 0 to 20 μmol/m2/s
  • Flux Resolution: < 0.2 μmol/m2/s


Download eosFD Sensor Specifications


manual & docs

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