Carbon dioxide is a carbon oxide compound with a chemical formula of CO2 and a chemical formula weight of 44.0095. It is a colorless, odorless, or colorless and lightly sour gas at normal temperature and pressure. It is also a common greenhouse gas and one of the combinations of air (accounting for 0.03%-0.04% of the total volume of the atmosphere).
Harm of Carbon Dioxide
The density of CO2 is higher than that of air. When carbon dioxide is low, it is not harmful to the human body, but when it exceeds a certain concentration, it will affect the breathing of humans and other organisms. The reason is that the concentration of carbonic acid in the blood increases, the acidity increases, and acidosis occurs. A CO2 detector is an instrument commonly used by people to detect the concentration of carbon dioxide.
| CO2 Concentration | Duration | Effect |
| 1000 ppm | <2.5h | People will temporarily reduce judgment, decision-making ability and thinking ability (even if they are healthy). |
| 2500 ppm | <2.5h | Makes a person cognitively borderline or cognitively dysfunctional. |
| 5000 ppm, with 20.9% Oxygen | / | Headache, lethargy, mental retardation, restlessness, sleep disruption. |
| 6% | 1-2mins | People experience hearing and visual impairments. |
| 7% (70000 ppm), with 20.9% Oxygen | 5mins | Die. |
| 10% to 15% | / | Dizziness, lethargy, severe muscle twitching, unconsciousness, and death within minutes. |
| 17% to 30% | within 1min | Loss of controlled and purposeful activity, unconsciousness or coma, convulsions, and death. |
| 30% Carbon Dioxide with 70% Oxygen | 30s | Unconscious, some have seizures, signs of weakness, and loss of brain function. |
What is Carbon Dioxide Used for?
High-purity carbon dioxide is mainly used in the electronic industry, medical research and clinical diagnosis, carbon dioxide laser, calibration gas for testing instruments and the preparation of other special mixed gases. It is used as a regulator in polyethylene polymerization.
Solid carbon dioxide is widely used to refrigerate dairy products, meat, frozen foods and other perishable foods in transit, and is used as a refrigerant in many industrial processes, such as crushing heat-sensitive materials, rubber polishing, metal cold treatment, shrinking of mechanical parts Assembly, vacuum cold trap, etc.
Gaseous CO2 is used for the carbonation of soft drinks, pH control of water treatment processes, chemical processing, food preservation, inert protection of chemical and food processing, welding gas, plant growth stimulant, in casting for hardening molds and cores and for Pneumatic devices are also used as diluents for sterilizing gas, for sterilization of medical appliances, packaging materials, clothing, fur, bedding, etc., bone meal disinfection, warehouses, factories, cultural relics, etc.
Liquid carbon dioxide is used as a refrigerant, in low-temperature tests of aircraft, bombs and electronic components, in enhanced oil recovery, rubber polishing and control of chemical reactions, and can also be used as a fire extinguishing agent.
As carbon dioxide gas is widely used in various industries, the requirements for carbon dioxide content in production operations are also becoming more stringent. Portable carbon dioxide detectors and fixed CO2 detectors have become popular detection equipment.
Applications Fields of CO2 Detector
- Animal husbandry: The quality of air is related to the growth of animals. If the air is turbid for a long time, the concentration of carbon dioxide is high, and there is no ventilation, it will cause animals to get sick or cause epidemic outbreaks. Therefore, installing a CO2 detector on the farm can prevent the occurrence of animal epidemics.
- Industry: CO2 detectors are widely used in industries, such as wastewater treatment, and safety production, especially downhole operations, which require monitoring of carbon dioxide concentration. CO2 detectors are commonly used in CO2-related industries such as metal processing, pulp and paper, cleaning and solvent extraction, and cryogenic cleaning.
- Public places: Conference rooms, classrooms, exhibition halls, hospitals, shopping malls, bars, restaurants, airports, railway stations, entertainment halls and other crowded places can be installed with carbon dioxide detectors for ventilation control and environmental quality monitoring.
- Agriculture: Carbon dioxide is related to the photosynthesis of plants, so it is widely used in agriculture. The appropriate concentration of gas fertilizer can increase the yield of agricultural crops. When the concentration of CO2 is insufficient, gas fertilizer can be used, which is of great help to the growth of vegetable plants and the improvement of vegetable yield.
