ABSTRACT
This study presents a comparison of two systems for measuring low-flow biogas production rates. Grass silage was used as substrate in the experiment. Measurements were made by using (a) manual readings and (b) an automated system. The automated system proved to be efficient as it allowed readings of the biogas flow rates in real time. Results were stored in a computerized system with a safe access interface to download the recorded data at any desired moment. Furthermore, the systems also minimized the error rate in comparison to the manual method.
automation; biogas; biogas meter; biogas volume
