Today's fuel cell technologies, which convert the chemical energy of fuel and oxygen into electricity, are developed at the same level as other market-existing energy conversion technologies. Solid oxide fuel cells (SOFC) and proton exchange membrane fuel cells (PEMFC) are among the most important fuel cell technologies. To monitor and control both technologies, a specific instrument is needed that will enhance production and marketisation of the new generation of innovative and cost-effective fuel cell stationaries (FCSs) with increased warranty periods. The EU-funded RUBY project intends to develop this specific instrument and complete the work by integrating hardware, stack diagnosis, control algorithms and fault detection algorithms for blowout preventer (BOP). The project's goal is to evaluate the lifetime of FCS components for reliable and accurate monitoring.