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Gas Detection Systems

The fire event has vital risks. Prevention, disclosure and critical importance of these critical fires are critical. Ventilation is also an important process to start the extinguishing process after evacuation. When it is known, those who are at risk of life first, and then goods and buildings begin to be saved. If there are valuable assets at your request, or if there is a high level of danger at your general level, it is of paramount importance in the fire fighting center with evacuation.

Automatic fire extinguishing systems protect all objects, rooms or buildings from fires and / or possible consequences of fire, which extinguish or prevent fires that are still in the initial phase. Contains water, foam, powder or gases for extinction.

Gas detection systems are used either natural gases or chemical extinguishing gases. In summary, natural gases change the volumetric concentration values ??of oxygen, while chemical quenching gases react with oxygen and intervene effectively in the combustion process.

Fire extinguishing gases are stored in pressure cylinders. The layout of the system, in particular the correct discharge of the extinguishing agent under sufficient pressure, is decisive in the proper operation of the extinguishing system.

We need to make clear the distinctions between the protection of the building and the protection of the object or volume. The building is always protected by water. This may cause partial damage to the building. The purpose of room protection is to protect valuable objects or data. For this reason, fire extinguishing gases are particularly suitable for purposes of room protection.

For the formation of fire, the fire triangle is known as:

− Heat - Oxygen - Fuel

Components must be present. Only one or two of these components is not sufficient to cause a fire, but all three may cause a chemical reaction known as co-combustion.

Fire Triangle

At least one of the three fire components must be targeted for successful extinguishing.

Gaseous extinguishing systems are mainly used as natural and chemical gases in two parts.

The following natural gases are suitable for extinguishing purposes because they are gaseous under ambient conditions and can be extracted from the atmosphere without significant expenditure:

gas detection systems


- Carbon dioxide (CO2)

- Nitrogen - nitrogen (N2)

- Argon (Ar)

In addition, a mixture of these gases is commercially available, for example Inergene (52% N2, 40% Ar, 8% CO2) or Argonite (50% N2, 50% Ar).

Halon 1211 (CF2ClBr) and Halon 1301 (CF3Br) were the first chemical fire extinguishing gases used worldwide. The Montreal Protocol of 1987 and the consequent international treaties agreed to amend them. Except for strategic special applications (aerospace, military, nuclear energy technology), the use of halogenated hydrocarbons for fire protection is prohibited.

Halogenated carbohydrates were introduced in the mid-1990s to replace halons. These substances do not have ozone-depleting effects and ODP (ozone depletion potential) values ??are 0. Well-known extinguishing gases in the fluorinated carbohydrate (HFC) group are, for example, HFC227ea (C3F7H marketed by Great Lakes under the name FM 200 ™) and HFC125 (C2F5H).

gas panel imageOn the other hand, these gases contribute heavily to the greenhouse effect.

In 2003, 3M ™ introduced a new chemical fire extinguishing gas under the name 3M ™ Novec ™ 1230. Its chemical formula is CF3CF2C (O) CF (CF3) 2, and it is a gas whose fire extinguishing efficiency for room / volume protection purposes has been proven in different fire tests.

Gaseous extinguishing systems shall be considered as a whole with the basic components specified in the following figure.

Central Equipment

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