The eosAC is a robust, recirculating soil flux chamber for measurement of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) multi-species gases with the Los Gatos Research UGGA, Gasmet Technologies (see below for additional Gasmet gases) and Picarro gas analyzers. Up to twelve autochambers can be connected to the analyzer via the eosMX multiplexer. The eosAnalyze software enables processing of logged data on any Windows-based computer.

eosAC autochamber

eosAC deployed in the rainforest

Soil Flux Chamber Technology

The eosAC uses the automated closed dynamic chamber technique (Pumpanen et al., 2004) for measurement of soil gas flux (CO2, CH4, N2O). Using the eosMX or eosMX-P multiplexer you can connect up to 12 eosAC devices to your gas analyzer.

Proven in the Field

Deployed all over the world, the eosAC soil gas flux chamber has shown its strengths in measurement of CO2, CH4, N2O in a broad range of environments, from strawberry fields to rain forests.

Designed for Accuracy

The eosAC leads the way in soil gas flux chamber design with:

  • Slow raising/lowering that eliminates pressure effects during measurement
  • Vent design that ensures steady atmospheric pressure without compromising samples through back diffusion
  • Gas feed/return loop that promotes efficient mixing

Setup of the eosAC soil gas flux chamber is remarkably simple, so you are up and running fast. Its compact size and space-saving lift mechanism help it avoid entanglement with things like undergrowth and vines. With a reach of 30 m / 100 ft (15 m / 50 ft for LGR UGGA) for each chamber from the analyzer, you have a huge coverage area of about 2800 m2 / 30,000 ft2.

  • Easy setup
  • LGR gas analyzer integration (CO2, N2O, CH4)
  • Picarro gas analyzer integration (CO2, N2O, CH4)
  • Gasmet gas analyzer integration (CO2, N2O, CH4, NH3, CO, H2O vapour)
  • Long term unattended measurements
  • Flux calculation software
  • Compact spatial requirement
  • Robust aluminum construction
  • Powder-coated finish
  • Integrated pressure venting
  • Built-in chamber temperature and pressure sensors
  • Peripheral ports for additional sensors (soil temperature & soil moisture)
Specifications Highlights
  • Ambient Temperature: 0 C to 50 C / 32 F to 122 F
  • Ambient Humidity: 100% RH, non-condensing
  • Power: 12 V DC, < 8 W
  • Chamber Volume: 1969 cm3 / 120 in3
  • Weight: 5 kg / 11 lb

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