O2 measurements are essential to the control of industrial chemical and combustion processes, the efficiency of which depends the level of pollution emitted. Additionally Environmental standards include O2 compensation of effluent measurement as part of the atmospheric emissions reporting requirements increasing considerably the need for reliable, accurate, and adaptive continuous O2 monitoring solutions. SETNAG O2 analysers uses the patented MicroPoas technology allowing extremely accurate O2 measurement in a large variety of media and conditions without the need for reference air.