Air Quality

Air pollution is one of the most important factors affecting the quality of life and the health of the increasingly urban population of industrial societies. All major cities have networks of monitoring stations providing continuous measurements of the most important pollutants. However, the number of these stations is usually very small. Air pollution is highly location dependent, for example, the vicinity of traffic chokepoints or certain industrial installations has much worse air quality than average. A detailed picture based on real-time data from mobile sensors for the entire populated area offers major benefits to air quality control. Air quality SmartSpace sensor is a pervasive sensor device capable of measuring air quality and relaying data via wireless communications to a central server. Easily deployed by fixing to lamp posts or similar street furniture at a height of 2.5m plus and up to 80-100 m apart. The units are small, low cost and completely wireless, designed for all weather conditions with a continual power supply provided by internal battery, making them rapid and easy to deploy in large numbers (up to thousands of sensors in a city area) to provide real time pollutant information.


  • Temperature, Humidity, Pressure:

Barometric pressure, humidity and temperature combined in one stable environmental sensor.




SmartSpace sensors allow to monitor the concentration of following gas to determine the air quality:

  • Carbon dioxide (CO2): it is a gas naturally present in our atmosphere. Together with water vapor and other gases is one of the greenhouse gases that regulate Earth's temperature. Production in excess as a result of increased fossil fuel usage could have a direct impact on climate change.
  • Carbon monoxide (CO): it is produced in incomplete combustion, ie, when part of the fuel does not react completely due to a lack of oxygen. Its danger to humans and animals, once it sets in blood hemoglobin, it prevents oxygen transport, which can be lethal. Although in open space is easily diluted, the CO emission from the engines of cars in congested areas causes may have rates of 50-100ppm, which are dangerous.
  • Nitrogen dioxide (NO2): it is a gas produced by the rapid oxidation of NO, which is produced by burning fossil fuels in vehicles and industry. It is a toxic and irritating gas that affects the respiratory system and also encourages the production of nitric acid (HNO3) responsible for acid rain.
  • Methane (CH4): it is produced when organic materia decomposes in oxygen-poor environments. As carbon dioxide, it is a greenhouse gas so its increase may contribute to global warming.
  • Hydrogen sulfide (H2S): it is emitted into the atmosphere by various industries, such as paper. It is particularly dangerous because it is a highly toxic gas and it is a sulfur dioxide precursor, one of the gases in the processes of formation of acid rain.In addition, this gas is specially annoying because of its foul smell.
  • Hydorcarbons (Ethanol, Propane, Butane, Isobutane, Toluene): they come from various sources, such as poor combustion of gasoline and diesel or indsutrial processes. They are, among others, responsible for greenhouse effect and contribute to produce respiratory problems.
  • Ozone (O3): it is a natural constituent that can be found at sea level with a concentration of 0.01 mg / kg. However, with intense solar radiation and high contamination coming from vehicles, its concentration can go up to 0.1 mg / kg being dangerous. In this proportion, the plants may be affected and human may experience irritation of nasal passages and throat and dryness in the lining of the respiratory tracts.


Many other gas concentration sensors are available, to monitor specific industrial processes.


  • Chlorine dioxide (CLO2)
  • Chlorine (CL2)
  • Ethylene oxide (ETO)
  • Hydrogen (H2)
  • Phosphine (PH3)
  • Sulfur dioxide  (SO2)
  • Nitric oxide (NO)
  • Oxygen (O2)
  • Hydrogen Cyanide (HCN)
  • Ammonia (NH3)
  • Hydrogen Chloride (HCL)
  • Volatile Organic Compound (VOC)
  • Liquefied Petroleum Gas (LPG)




  • PM10: Air pollution can take the form of solid particulate. Some particulates occurr naturally from volcanoes, dust storms, forest and grassland fires, living vegatation. Other from human activities, such as the burning of fossil fuels in vehicles. Increased levels of the fine particles in the air are linked to health hazards such as heart disease, altered lung function and lung cancer. The sensor is capable of measuring concentrations down to 0,1 micrograms per cubic meter of PM10 (Particles on the order of 10 micrometers or less). This size of particulate matter has been agreed upon for monitoring by most regulatory agencies.