{"id":207,"date":"2022-09-16T14:49:37","date_gmt":"2022-09-16T14:49:37","guid":{"rendered":"https:\/\/www.dmr.eu\/equipment\/?page_id=207"},"modified":"2024-05-22T20:11:20","modified_gmt":"2024-05-22T20:11:20","slug":"manual-eco2flux-chamber","status":"publish","type":"page","link":"https:\/\/www.dmr.eu\/technologies\/gas-emission-eco2flux\/manual-eco2flux-chamber\/","title":{"rendered":"Manual ECOFlux chamber"},"content":{"rendered":"\n
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In the design of the manual ECOFlux chamber we have used the same form factor as the automated ECOFlux chamber (diameter of 630 mm and a hight up to 800 mm). This makes it possible to combine the chambers easily if the scientific setup or project economy can benefit from it and get comparable results.<\/p>\n\n\n\n

As shown in picture 2 to the right, the chamber comes preinstalled with a fan and tubings for a closed system design, which minimizes the risk of affecting the differential pressure, and thereby driving forces for gas emission.<\/p>\n\n\n\n

Furthermore, the foil and lid in the chamber is made of transparent FEP (Fluorinated ethylene propylene) which has many of the same properties as teflon but is also very transparent to sunlight to minimize influencing photosynthesis. We also supply a coer if the user wants to \u201cturn of\u201d photosynthesis. As the chamber can be transparent as well as darkened, both Net Ecosystem Exchange (NEE) and Ecosystem Respiration (ER) can be measured directly and Gross Ecosystem Photosynthesis (GEP) can be estimated by their difference (GEP = NEE  \u2013 ER), thus producing direct data of the processes behind NEE. The chamber covers a ground area of 3,100 cm2 and has a volume of 220 L (at standard height of 80 cm) and therefore is big enough to include plants communities in many natural low-stature ecosystem types as well as many agricultural crops.<\/p>\n<\/div>\n\n\n\n

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Picture 1: Manual ECOFlux chamber<\/em><\/em><\/figcaption><\/figure>\n\n\n\n
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Picture 2: Chamber Collar<\/em><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

We have designed the manual chamber with a fixed collar. This ensures a tight connection to the soil, measurements in the exact same spot over time and reduction of costs as the same chamber can be applied for multible collars. A typical setup for application of manual chambers includes:<\/p>\n\n\n\n