The properties of oil and water are sufficiently different to make distinguishing them relatively easy. This article describes some of the state-of-the-art sensors used for oil in and on water detection, including interfaces. Oil on water Outfalls from ships and municipal or industrial waste treatment plants must be monitored because if the emissions contain hydrocarbons they’ll float on the water’s surface and form a barrier, which will prevent the oxygenation of the water and cause fish to suffocate. On-off, oil-on-water detectors are capable of measuring even a few drops of petroleum floating on the surface, so these alarm devices are used downstream of plant…Full Story
Apart from wars, rumors of wars, political upheavals, stock market crashes and technological advances that affect the process industries, as they do everything else, salaries and benefits in the process automation field remain remarkably similar over time.