Gas Detectors and Analyzers There are 25 products.

Subcategories

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  O2/ CO2/ CO

  Carbon dioxide measurement is required in many applications from building automation and greenhouses to life science and safety.
  
  CARBON DIOXIDE AND SAFETY
  Carbon dioxide is a non-toxic and non-flammable gas. However, exposure to elevated concentrations can induce a risk to life. Whenever CO2 gas or dry ice is used, produced, shipped, or stored, CO2 concentration can rise to dangerously high levels. Because CO2 is odorless and colorless, leakages are impossible to detect, meaning proper sensors are needed to help ensure the safety of personnel.
  
  Effect of Different Levels of CO2
  

  Concentration	Effect
  350 to 450 ppm	Typical atmospheric concentration
  600 to 800 ppm	Acceptable indoor air quality
  1,000 ppm	Tolerable indoor air quality
  5,000 ppm	Average exposure limit over 8-hour period
  6,000 to 30,000 ppm	Concern, short exposure only
  3 to 8%	Increased respiration rate, headache
  > 10%	Nausea, vomiting, unconsciousness
  > 20%	Rapid unconsciousness, death

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  Ammonia NH3

  Description

  • Colorless combustible toxic gas with a characteristic pungent smell.
  • Lighter than air, density = 0,73 kg/m3
  • Lower explosive limit (LEL) = 15 %vol

  Health exposure limits (Directive 2000/39/EC):

  • 8 hours TWA = 20 ppm (14 mg/m3)
  • 15 mins STEL = 50 ppm (36 mg/m3)

  A colorless gas, highly soluble in water, with a characteristic pungent smell. Ammonia is a large-scale production of the chemical industry widely used as a raw material for the production of fertilizers and explosives,as a refrigerant,as a cleaning and antimicrobial agent. Ammonia is also produced naturally from the decomposition of organic matter, including plants and animals.

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  Carbon Monoxide CO

  Description

  Colorless, odorless and tasteless gas that is toxic to humans in concentrations above about 35 ppm. Lighter than air.

  • Density at 0 °C = 1,250 kg/m3
  • Density at 25 °C = 1,145 kg/m3
  • Lower explosive limit (LEL) = 12,5 %vol

  Health exposure limits (Directive 2000/39/EC):

  • 8 hours TWA = 20 ppm (23 mg/m3)
  • 15 mins STEL = 100 ppm (115 mg/m3)

  Carbon monoxide (CO) has anthropogenic origins in the incomplete combustion of fossil fuels or other carbon-containing organic matter. It arises in emissions from electricity production, industrial, commercial or residential combustion and also from transport with combustion engines. It can also have natural origins in volcanic eruptions and forest fires.

  In urban areas, road transport is the main source of CO and as such the concentrations of this pollutant vary with traffic variations. Furthermore, this pollutant is emitted in greater quantities when engines are at high speed, that is, when stopping and starting or at low speeds.

  CO can cause headache, dizziness and malaise even nausea and vomiting, it can even reduce the ability to learn, work and manual dexterity. The harmful effects on human health are due to its ability to irreversibly combine with blood hemoglobin which, instead of binding to oxygen in the lungs to transport it to tissues and carbon dioxide to transport it from tissues to lung tissues, this function is compromised by the occupation of the hemoglobin position by CO, which creates a very stable composition. With long exposure times it can even cause death.

  CO contributes to the formation of tropospheric ozone and its oxidation by oxygen in the air contributes to the greenhouse effect.

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  Oxygen O2

  Description

  • Colorless and odorless gas.
  • Oxygen is 1,1 times heavier than air.
  • Oxygen deficiency (less than 19% O2) is dangerous to human health.

  A colorless gas, one of the main components of the air.Oxygen is necessary for the breathing of humans and animals, oxygen deficiency is harmful to health.

  Oxygen: Oxidizing Gas for Life Support and Performance Optimization Applications

  Oxygen is a colorless, odorless and highly reactive diatomic gas, constituting one of the main components of the Earth's atmosphere, with an approximate concentration of 21%. It is the most abundant chemical element in the Earth's crust, predominantly present in the form of oxides, silicates and carbonates.

  In addition to its fundamental role as a breathing gas in medical and life support environments, oxygen has significant oxidizing properties that are exploited in multiple industrial sectors. Its use, in oxygen enrichment processes or partial replacement of atmospheric air, results in substantial gains in efficiency, allowing the optimization of chemical and biological processes, as well as improving performance and reducing the carbon footprint, when compared to sources alternative energy sources.

  The main industrial applications of oxygen include combustion and oxidation processes, biological fermentation, wastewater treatment, and aquaculture systems. In the metallurgical industry, oxygen is widely used in combination with gases such as acetylene (C₂H₂), other fuels or with argon (Ar) and carbon dioxide (CO₂) for metal cutting and welding operations, brazing, scarifying, thermal hardening, cleaning and casting. In the food sector, oxygen is used to preserve the color and freshness of perishable products, such as meat, by maintaining a controlled gaseous environment.

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  Radon

  Radon

  Radon is a naturally occurring radioactive gas that is colorless and odorless. Its presence in the environment is common, both outdoors and indoors. However, prolonged exposure to radon inside buildings poses a significant risk to public health.

  Inhalation of radon is the primary source of ionizing radiation exposure for the general population, contributing over 40% to the annual effective dose of radiation received. The percentage of the annual dose received by the global population can be found in the report "Sources and Effects of Ionizing Radiation, UNSCEAR 2008 Report, Vol. I."

  Exposure and Health Effects
  Prolonged exposure to radon indoors is one of the leading causes of lung cancer. Smokers and ex-smokers are at an increased risk due to the combined action of tobacco and radon. There is no consistent evidence linking radon exposure to other types of cancer or diseases.

  Radon produces radioactive particles in the air we breathe. These particles become trapped in our respiratory pathways, where they emit radiation, causing damage to the lungs. This damage increases the risk of lung cancer with prolonged exposure over time.

  According to the World Health Organization (WHO), it is estimated that radon exposure causes between 3% and 14% of lung cancer cases globally. In Europe, it is estimated that 9% of lung cancer deaths are attributed to radon exposure, representing about 2% of all cancer-related deaths.

  Radon is present everywhere, both outdoors and indoors in buildings. All buildings contain radon, and in most cases, the concentrations are low.

  In Portugal, certain areas of the country are more prone to higher levels of radon in buildings. These areas can be consulted on the radon susceptibility map. The map, produced from a national survey and the national radon monitoring campaign, indicates the level of susceptibility to radon indoors. However, the only way to know the exact radon concentration is by direct measurement.

  Radon Presence and Monitoring
  Although radon is present both outdoors and indoors in buildings, its concentration can vary significantly. Most buildings have low concentrations, but there are specific geographic areas where radon levels may be higher.

  The only way to determine the exact radon concentration in a building is through direct measurements.

  Mitigation of Radon Exposure
  Reducing exposure to radon indoors can be achieved through preventive measures implemented during the construction phase of new buildings or through corrective or remediation measures in existing buildings.