A laser-based hydrogen (H2) sensor using wavelength modulation spectroscopy (WMS) was developed for the contactless measurement of molecular hydrogen. The sensor uses a distributed feedback (DFB) laser to target the H2 quadrupole absorption line at 2121.8 nm. The H2 absorption line exhibited weak collisional broadening and strong collisional narrowing effects. Both effects were investigated by […]

In the steel industry, efficient energy management is crucial to maintaining profitability and sustainability. By-products such as blast furnace gas and coke oven gas serve as valuable fuel sources for power generation, but their energy contribution can vary widely based on their composition. Accurately measuring the calorific value of these gases – determined by their […]