Stuart Rye, NEO Monitors AS, considers whether methane can safely exist in a hot-fired process heater during normal operation. This is not just an article discussing Safe Combustion, featured in the August issue of Hydrocarbon Engineering.  It is also a tribute to and in memory of a dear friend and colleague, Larry Sieker, who sadly […]

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 […]