The eosFD, manufactured by Eosense, uses the patented Forced Diffusion (FD) technology to measure soil CO2 flux directly using an NDIR sensor and small internal diaphragm pump. It features onboard data logging capabilities that enable it to be a stand-alone sensor; however, it can also deliver analog or serial data to Campbell Scientific data loggers. This sensor compliments a Campbell Scientific eddy-covariance system. The included eosLink software enables you to connect, configure, and collect data directly from the sensor.