Carbon dioxide is an odorless, colorless gas invisible to the naked eye. Unlike carbon monoxide, CO2 is non-toxic to the human body. It also plays a crucial role in maintaining the Earth's temperature. Carbon dioxide emissions have risen in recent years. They are due in particular to the excessive use of fossil fuels.
Depending on the amount of CO2 inhaled, various symptoms are experienced. They vary according to three criteria:
CO2 is measured in Parts per Million (PPM). Low carbon dioxide levels in the home mean healthy air. On the other hand, if this level is too high, it can have an adverse effect on a person's health. It should be noted that, because of the increase in respiratory rate during physical effort, symptoms appear more quickly.
In enclosed spaces, there are a few things you can do to limit your exposure to CO2. They will help you improve Indoor Air Quality:
In any environment, CO2 travels both indoors and outdoors. Its sources are numerous, such as :
One of the best ways to prevent CO2 in confined spaces is with a direct-reading detector. It is capable of monitoring the level of containment in the air.
The ICONE index (Indice de CONfinement d'air dans les Ecoles) is a benchmark for assessing indoor air confinement. It is divided into six categories ranging from 0 (no containment) to 5 (extreme containment). The average concentration in an enclosed space, calculated by the CO2 sensor, determines the containment index. In fact, the carbon dioxide sensor and the ICONE index are one and the same. The higher the air concentration, the more confined the air, so the figure is higher. In this case, the air is polluted and needs to be renewed. Consequently, a low CO2 level will bring the index closer to 0.
It is calculated over a period of 4.5 non-consecutive days in order to be more precise about the situations observed. What's more, only the usual occupancy conditions are recorded, to avoid taking into account exceptional occupancy situations.
In some elementary classes, values of 4 (very high containment) and 5 (extreme containment) can be found. For example, a value of 5 indicates peak CO2 concentrations in excess of 4,000 ppm. It also corresponds to average occupancy values above 2,000 ppm.
Depending on WHO and ANSES regulations, thresholds may differ from one country to another. In France, regulations require an ICONE index of less than or equal to 1.5, i.e. 1500 ppm, for ERP (Etablissements Recevant du Public) buildings. In addition,ANSES recommends keeping CO2 levels below the 1000 ppm threshold.
Regulations require ERP to monitor Indoor Air Quality. It is all the more necessary to examine this closely in schools and other facilities catering for a young public. Children are the most vulnerable to air pollutants because their immune systems are not fully developed to cope with them.
CO2 detectors are capable of measuring pollution levels in a closed environment over a wide range. The latter varies between 400 and 5,000 ppm. Thanks to on-board technology, you'll be able to see whether your indoor air is healthy. This will enable you to implement corrective actions to improve Indoor Air Quality.
It can be difficult to interpret thresholds and their effects. To make things easier for you, here's a quick summary:
When the CO2 level exceeds 1700 ppm, the benchmark changes to 4 or 5. In this case, it is imperative to ventilate the premises immediately to reduce the concentration and avoid endangering the occupants of a room.
These thresholds are general indications. In fact, the consequences vary according to the type of individual, his or her sensitivity and the space in which he or she evolves.
Nexelec offers a wide range of detectors capable of measuring and analyzing Indoor Air Quality. CO2 sensors are designed to make your life easier. On-board technologies allow you to precisely analyze the CO2 level in the room. The precision of the data collected helps you to act accordingly.
Connected, they offer reliability and stable connectivity. What's more, CO2 thresholds can be configured in our Nexelec TOUCH application. The latter uses NFC technology to personalize carbon dioxide thresholds. The application alerts you when the rate becomes too high. Nexelec solutions also enable you to detect a wide range of indoor pollutants, as well as temperature and humidity.
Since the COVID-19 pandemic, CO2 concentration in confined spaces has been a major concern. The "ICONE" containment index has been developed to help you implement appropriate air renewal strategies based on the CO2 concentration measured. It is important to keep CO2 levels below regulatory thresholds. These indicators are all the more important in schools and ERP. Nexelec's CO2 detectors and application offer an effective way of monitoring and improving Indoor Air Quality. Measures help you contribute to the health and well-being of occupants in schools and other facilities.