The CPY-5 Canopy Assimilation Chamber is ideal for measurement of net canopy CO2 flux on low-lying vegetation and fruit. Constructed of rugged polycarbonate, the interior of the transparent chamber includes a user-adjustable PAR (Photosynthetically Active Radiation) sensor and an air temperature sensor near the soil surface. An air mixing fan and custom manifold system ensures uniform circulation within the chamber. An aluminum ring provides a good seal on the soil surface or on collars.* The Water Vapor Equilibrator comes standard.