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Gas detectors for carbon dioxide (CO2)

Learn all about carbon dioxide (CO2) and find the right products for a carbon dioxide gas warning system.

Carbon dioxide (CO2) and its properties

Carbon dioxide (CO₂) is a colorless and odorless gas that is naturally found in the air. It is released through processes such as the respiration of organisms, the combustion of fossil fuels and various industrial activities. As an essential part of the carbon cycle, CO₂ is an important factor; it contributes to global warming because it acts as a greenhouse gas. CO₂ is harmless in low concentrations, but high concentrations can cause health risks.

Gas detector

I2608-CO2-I

CO2

Carbon dioxide

0 ... 40'000 ppm

Data sheet

S2634CO2

CO2

Carbon dioxide

0 ... 2 % by volume

Data sheet

S4015CO2

CO2

Carbon dioxide

0 ... 2 Vol. %

Data sheet

I2608-CO2-I-DM

CO2

Carbon dioxide

0 ... 40'000 ppm

Data sheet

I2608-CO2-RP33-LCD

CO2

Carbon dioxide

0 ... 40'000 ppm

Data sheet

I2608-CO2-RP33

CO2

Carbon dioxide

0 ... 40'000 ppm

Data sheet

I2608-CO2-I-RLCD

CO2

Carbon dioxide

0 ... 40'000 ppm

Data sheet

I2608-CO2-I-LCD

CO2

Carbon dioxide

0 ... 40'000 ppm

Data sheet

I2658-CO2-I-3G

CO2

Carbon dioxide

0 ... 40'000 ppm

Data sheet

I2648-CO2-I

CO2

Carbon dioxide

0 ... 40'000 ppm

Data sheet

I2618-CO2-I

CO2

Carbon dioxide

0 ... 40'000 ppm

Data sheet

Set point

Information on Set points for carbon dioxide

SUVA set points

MAK value: 5000 ppm (9000 ^mg/m3)

EU occupational exposure limit values (BOELV)

Gas characteristics

Unnoticed: Carbon dioxide is a colorless gas that cannot be seen.
Odorless: It has no odor, which is why it cannot be detected without special detectors.
Density: Approximately 1.98 kg/m³, it is heavier than air.
Solubility: Soluble in water, carbonic acid is formed
Toxicity: High concentrations (over 5%) can cause suffocation because CO₂ reduces the oxygen content in the air.
Greenhouse gas: CO₂ is a factor in global warming because it stores heat in the atmosphere.

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Questions about the detection of carbon dioxide?

SOURCES OF DANGER

Risk of suffocation: An increase in CO₂ levels can reduce the oxygen content in the air and thus cause shortness of breath or suffocation.
Inadequate ventilation: CO₂ can accumulate unnoticed in rooms with inadequate ventilation or in closed environments.
Release during industrial processes: CO₂ will be released unintentionally in certain industrial applications (e.g. during the production of dry ice or through combustion processes).
Dry ice: In rooms with inadequate ventilation, the CO₂ concentration can quickly become dangerous if dry ice (solid CO₂) vaporizes there.
Increased CO₂ levels in confined spaces: CO₂ can accumulate in confined spaces, such as under water (when diving) or in narrow storage rooms, if there is insufficient ventilation.
Gas leaks: Leaks in systems that use CO₂ can cause dangerously high concentrations.

HIGH-RISK SCENARIOS

Increase in CO₂ concentration in the atmosphere: Since industrialization, the CO₂ concentration in the atmosphere has increased, which intensifies the greenhouse effect and thus contributes to global warming; as a result, global temperatures are rising.
Increase in CO₂ concentration in the atmosphere: Since industrialization, the CO₂ concentration in the atmosphere has increased, which intensifies the greenhouse effect and thus contributes to global warming; as a result, global temperatures are rising.
The increase in extreme weather events: Extreme weather situations, such as the heatwaves in Europe in the summer of 2022 or the devastating floods in western Germany in 2021, have become more frequent in recent years. An increase in CO₂ emissions intensifies these events.
Oceans are becoming increasingly acidic due to CO₂ uptake: coral reefs around the world are increasingly at risk because the oceans are becoming more acidic due to CO₂ emissions. In the Caribbean waters, a falling pH value makes it difficult for marine organisms such as mussels, crabs and corals to form shells and structures.
Uncontrolled CO₂ build-up: In a Russian power plant, a defect caused dangerously high CO₂ levels to build up in a basement room, resulting in an emergency evacuation and injuries. Extreme weather situations, such as the heatwaves in Europe in the summer of 2022 or the devastating floods in western Germany in 2021, have become more frequent in recent years. An increase in CO₂ emissions intensifies these events.
Oceans are becoming increasingly acidic due to CO₂ uptake: coral reefs around the world are increasingly at risk because the oceans are becoming more acidic due to CO₂ emissions. In the Caribbean waters, a falling pH value makes it difficult for marine organisms such as mussels, crabs and corals to form shells and structures.
Uncontrolled CO₂ build-up: In a Russian power plant, a defect caused dangerously high CO₂ levels to build up in a basement room, resulting in an emergency evacuation and injuries.

Health risks and handling of carbon dioxide

Concentration

Konzentration	Symptome/folgen
%gas-rep-concentration%	%gas-rep-consequences%
%gas-rep-concentration%	%gas-rep-consequences%
%gas-rep-concentration%	%gas-rep-consequences%

Concentration table only visible in landscape format.

First aid

Carbon dioxide (CO2) poisoning can be life-threatening and requires immediate first aid measures. What to do in the event of CO2 poisoning

1. immediately ventilate and leave the danger zone:

Move people who are affected out of the area with a high CO₂ concentration and into fresh air immediately. Ventilate the room well by opening the windows or activating ventilation.

2. control of the state of consciousness

Carefully lay the person on their back, secure the airway and check breathing. If necessary, start immediate resuscitation measures (such as cardiopulmonary resuscitation).
If the person has stopped breathing, start CPR immediately until professional help arrives.

3. rapid medical support

Call 911 immediately to get professional help.
Explain the situation to the emergency services (e.g. CO₂ poisoning, location, condition of the person).

4. reassurance and monitoring

If the person is conscious, they should remain calm and not exert themselves so as not to increase the oxygen requirement.
Observe signs of deterioration such as shortness of breath, confusion or even unconsciousness.

Important note:

Never go into an area that you suspect contains CO2 without adequate respiratory protection or safety precautions.

In case of unintentional release

In the event of an accidental release of carbon dioxide (CO₂), especially if large quantities are involved, immediate and targeted measures are required to minimize the risk to people. The following should be done:

1. evacuation without delay

People in the vicinity of the CO₂ source should move quickly and safely to an area with fresh air.

2. fresh air supply for the affected rooms

Open a window or switch on the mechanical ventilation to reduce the CO₂ concentration.

3. communication and warning

Signal the danger with an alarm to warn everyone in the vicinity.
Contact the emergency services immediately and describe the extent of the CO₂ release.

4. prevent access to affected zones

Ensure that nobody enters the affected area without suitable protection (such as respiratory masks).

5. control and diagnosis

Use measuring devices to check whether the CO₂ concentration has been reduced and there is no longer any danger.
Monitor air quality to ensure that CO₂ concentrations have been reduced to a safe level.

6. safety and aftercare protocols

Root cause analysis: Identify the source of CO₂ emissions and ensure that no further leaks occur.

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