The air-fuel-ratio has a strong impact on the combustion process. It influences ignition delay, combustion efficiency and LoI (loss on ignition), the emission levels as well as slagging and fouling. In order to improve combustion quality and boiler performance online reading of the coal flow in each coal pipe is required.​

Our instrument is an online system for dynamic coal flow monitoring and balancing. It is based on non-intrusive micro-wave sensors which continuously measure the mass flow and coal velocity inside coal pipes and quantify the imbalance of coal flow from pipe to pipe. In combination with our specific software the instrument enables to adjust the air-fuel-ratio at burner level.