The e-noses are positioned near the odor sources of the site and measure the odor continuously. The odor data from the e-noses and the weather data from the weather tower are sent to the OdoWatch® software, which models the atmospheric dispersion and displays the site’s odor plume. OdoWatch® is calibrated to recognize and quantify (in odor units) the odors of each site.

The standards used for the measurements are ASTM E-679-91 and European Standard EN 13725.