The aeris® AE2010 Ozone (O3) Analyser employs a nondispersive ultraviolet (UV) absorption to accurately and reliably measure ozone concentrations in ambient air. Implementing a selective O3 scrubber and continuously measuring an Ozonated and Reference sample the analyser combines high sensitivity and stability with high rejection of potential interfering components. O3 concentrations are calculated according to the BeerLambert law, automatically corrected for temperature, pressure and flow changes and can be displayed in volumetric or mass concentrations. The easy access drop down front panel includes a clear, colourful and easy to read built-in data display for trends, averages, status and historical information in numerical and graphical formats. Intuitive menu screens provide clear access to all available options and instrument setup. The optimum measuring range is automatically selected for the display and RS232 outputs for each parameter. Values are reported as floating point numbers with one part per trillion resolution avoiding range selection. Extended Memory capacity is incorporated in all aeris® series analysers providing recorded data to be downloaded on site or remotely utilizing MECOMM utility software or any computer terminal program.