Ozone Kunak Smart Environment catalogue 
Where is it found?
Ozone (O3) is found in the troposphere and it is the re-sult of the atmospheric reaction of a number of pre-cursor pollutants, which come from both natural and man-made sources. Precursor pollutants are origina-ted by human activities and include hydrocarbons and nitrogen oxides. They are largely emitted by cars and other vehicles, fossil fuel power plants, oil refi neries, the agriculture sector and a number of other industries.
Why is it harmful?
Ozone (O3) is a reactive gas that exists in two layers of the atmosphere: the stratosphere (upper layer) and the troposphere (at ground level and up to 15 km). Ozone, in the upper layer, is essential to protect the Earth from the sun’s ultraviolet rays. At lower levels, it is an important greenhouse gas and an air pollutant, which is harmful to human and ecosystem’s health. It is also the major component of urban smog.
O3 cartridge
The Ozone Cartridge has a built-in electrochemical sensor that detects NO2 and O3 concentrations. Then, to measure accurately the O3 concentration, it is required to have installed in the same device the NO2 Cartridge. Thus, thanks to Kunak algo-rithm, it is possible to deliver accurate measurements of Ozone, with no NO2 infl uen-ce, even at a high temperatures which are related to higher O3 concentration due to the sun radiation.
Technical characteristics
| Type | Unit | Measurement | Resolution (2) | Optimal | Optimal | Operating | Guarantee |
| measure | range (1) | temp. range (3) | RH range (4) | life (5) | range (6) | ||
| Electrochemical | µg/m3, ppb | 0-2,000 ppb | 1 ppb | -30 to 40 ºC | 15 to 85 %RH | >24 months | 20 ppm |
Proven performance
| LOD (Limit of detection) (11) | Performance limit level (14) | Typical accuracy (15) | 90% confidence interval (16) | R2 typical precision (17) |
| 2 ppb | <10 ppb | ± 8 ppb | 14 ppb | > 0.9 |
