A REVIEW ON HYDROGEN DETECTION TECHNOLOGY

Abstract

In relation to other flammable gases and vapours, hydrogen has a variety of peculiar properties, like nitrogen, propane or gasoline vapour. Hydrogen cannot be sensed by human senses as it is a colourless, odourless and tasteless flammable substance, and other ways are thus necessary to detect its presence and to measure its concentration. In conjunction with the production and increased use of hydrogen gas as an energy carrier and as a chemical reactant, hydrogen sensors are of growing interest. Hydrogen detection and concentration measurements have a tradition of over 100 years, starting with hydrogen measurements at airship filling stations. There's an enormous different types of sensors recorded in the hydrogen detector publications and these sensors are grouped into eight different working concepts in this work. These types of sensor characteristic output parameters, like measurement length, sensitivity, selectivity and reaction time, are checked and then grouped into eight groups in order to define the hydrogen sensor criteria for practical applications.