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    STUDIA AMBIENTUM - Issue no. 1-2 / 2012  
         
  Article:   ALERT AUTOMATION SYSTEM OF OZONE MONITORING BY LABVIEW GRAPHICAL PROGRAMMING PLATFORM.

Authors:  FLORIN UNGA, IOANA POPOVICI, SILVIU GURLUI.
 
       
         
  Abstract:   The most used method for measuring ozone concentration is ultraviolet photometry. The continuous analyzer Horiba APOA 370 corresponds to legal standards, determining the ground-level ozone concentration. From scientifically point of view we identified the dependence of atmospheric ozone by certain meteorological parameters. From first observations, we found a diurnal variation of the ozone quantities, during night time low values of ozone concentrations (under 40 ~ 50 ug/m3) and during day time higher concentrations (above 50 ~ 60 µg/m3). Knowing that the target for human health protection is 120 ug/m3 (the maximum daily value on 8 hours average) and an alert value is 240 ug/m3 (average per 1 hour). Keeping in mind that Horiba APOA 370 is a ground monitoring instrument, the humidity and temperatures in the atmosphere also influence the ozone concentration. The link between LabView graphical programming platform and ozone monitoring system, Horiba APOA 370, made possible a fast and real-time acquisition of data regarding atmosphere-level ozone concentration. To simplify, we used the Ethernet port of the device for transmitting data, with the mention that the device uses its own protocol. Performances of LabView virtual instrumentation helped at increasing the monitoring system efficiency.

Key words: LabView, Horiba, ozone, automation
 
         
     
         
         
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