Gas Detectors by Combustible Gases

What is Combustible Gas?

Combustible gas refers to any gas that has the potential to ignite and burn when exposed to an ignition source, such as an open flame, spark, or heat. These gases are characterized by their ability to undergo combustion, a chemical reaction that releases energy in the form of heat and often light. Combustible gases are commonly used as fuels in various applications, including heating, power generation, transportation, and industrial processes.

The flammability of a gas depends on several factors, including its chemical composition, concentration in the air, and the presence of oxygen or other oxidizing agents. When the conditions are right, a combustible gas can form a flammable mixture with air, and if ignited, it can lead to a fire or explosion.

Safety precautions are essential when working with combustible gases to minimize the risk of accidents. This may include proper storage, handling, and transportation procedures, as well as the use of safety equipment like gas detectors, flame arrestors, and explosion-proof devices.

Common examples of combustible gases include Methane (natural gas), Propane, Butane, Hydrogen, Ethylene, Acetylene, and various hydrocarbons. These gases play a crucial role in energy production, industry, and daily life but must be managed safely to prevent accidents and hazards.

Types of Combustible Gases

Combustible gases encompass a wide range of gases that have the potential to ignite and burn when exposed to an ignition source, such as an open flame, spark, or heat. These gases are used as fuels for various industrial, residential, and transportation applications. Here are some common types of combustible gases:





Carbon Monoxide









Hydrogen Sulfide











GasDog Gas Detectors for Combustible Gases Detection

Combustible gas leak detectors are essential safety devices designed to monitor and detect the presence of various combustible gases, ensuring a safe environment in industrial, residential, and commercial settings. GasDog combustible gas detectors series can identify a range of gases, including Ammonia, Carbon Monoxide, Ethylene, Hydrogen, Hydrogen Sulfide, Methane, Methyl Bromide, and Phosphine. They employ advanced sensing technologies to provide early warnings when gas concentrations reach hazardous levels, helping to prevent accidents and protect lives and property. Whether it's the detection of Carbon Monoxide in homes, Methane in natural gas facilities, or Hydrogen in industrial processes, these detectors play a critical role in maintaining safety and peace of mind.

Ammonia (NH3) Detector

Ammonia (NH3) is a versatile chemical compound commonly used in industrial and agricultural applications. Its excellent cooling properties have made it a valuable refrigerant in the food industry and air conditioning systems. However, Ammonia poses significant safety risks due to its toxicity when inhaled, even at low concentrations, causing respiratory issues, eye irritation, and skin burns.

Additionally, it can be combustible when mixed with air within specific concentration ranges, posing a fire and explosion hazard in certain environments. To ensure worker safety and prevent accidental releases, specialized equipment like Ammonia detectors, such as the GasDog detector line, is essential in industries like agriculture, refrigeration, and cleaning product manufacturing.

GasDog's Ammonia NH3 detectors include the GD200-NH3, GD300-NH3 and GD700-NH3 single-gas detectors. These detectors are designed to monitor and control Ammonia levels, making them invaluable tools for leak detection and safety assurance. By continuously monitoring Ammonia concentrations in industrial environments, they help safeguard workers and mitigate the risks associated with Ammonia exposure and potential combustion hazards, ensuring a safe working environment in various industries.

Carbon Monoxide (CO) Detector

Carbon Monoxide (CO) is a colorless, odorless gas composed of one carbon atom bonded to one oxygen atom. It is a highly toxic gas that poses a significant health risk to humans and animals when inhaled in excessive quantities. Carbon Monoxide is produced as a byproduct of incomplete combustion processes, such as those occurring in car engines, stoves, and heating systems. Its toxicity stems from its ability to bind tightly to hemoglobin in red blood cells, preventing oxygen from being transported effectively to body tissues, which can lead to hypoxia and potentially fatal poisoning. Due to its insidious nature, the presence of CO is often detected through specialized alarms in homes and workplaces to ensure early warning and safety measures. Proper ventilation and the use of CO detectors are crucial in preventing Carbon Monoxide poisoning and its associated health hazards.

How to Detect Carbon Monoxide?

Portable gas detector Fixed gas detector Fixed gas detector
GD200-CO GD300-CO GD700-CO
Portable gas detector Portable multi gas detector Portable multi gas analyzer
GD400-4GAS, GD400-5GAS GD200-CO, GD500-4GAS GD600-4GAS

Ethylene (C2H4) Detector

Ethylene (C2H4) is a vital hydrocarbon gas extensively utilized in various industries. This colorless gas possesses a sweet odor and is known for its flammability. Its significance in the realm of plant biology cannot be overstated, as it functions as a natural plant hormone. Ethylene plays a pivotal role in controlling various physiological processes in plants, including ripening, flowering, and leaf abscission. Beyond the world of botany, Ethylene is primarily produced through the steam cracking of hydrocarbons in industrial settings. It serves as a fundamental building block for the synthesis of numerous plastics, with polyethylene being one of the most ubiquitous and versatile plastics produced worldwide.

In industrial environments, Ethylene's flammable nature raises safety concerns. Ethylene C2H4 detectors are integral to ensuring workplace safety by promptly alerting personnel to any leaks or elevated ethylene levels. Furthermore, ethylene detectors are frequently integrated into comprehensive safety systems designed to mitigate the dangers associated with combustible gases, including ethylene, thereby contributing to safer industrial processes and environments. is available with the GD200-C2H4 portable gas detector, GD300-C2H4 and GD700-C2H4 fixed single gas detectors to keep workers safe in areas where Ethylene gas may be present. These monitors are especially vital in confined spaces where there is a risk of Ethylene gas reaching explosive concentrations.

Hydrogen (H2) Detector

Hydrogen (H2) is the lightest and most abundant element in the universe, making up approximately 75% of its elemental mass. It is an odorless, colorless, and tasteless gas, making it imperceptible to human senses. Hydrogen has a wide range of applications, including as a fuel source, a key component in chemical processes, and an essential element in various industries.

One significant application of hydrogen is as a fuel in clean energy technologies. When Hydrogen is burned or used in fuel cells, it produces water vapor as the only byproduct, making it a clean and environmentally friendly energy source. Hydrogen's potential as a clean energy carrier has gained prominence in efforts to reduce greenhouse gas emissions and combat climate change. Hydrogen is also an integral component in the detection of combustible gases. Combustible gas detectors utilize various sensor technologies to detect the presence of flammable gases, including Hydrogen. These detectors are essential for maintaining safety in industries where the risk of gas leaks and explosions is a concern, such as petrochemical, mining, and manufacturing.

To accurately monitor the many areas where this gas can pose a hazard, use one of GasDog's H2S gas detectors, available with GD200-H2, GD400-H2 portable gas detectors, GD300-H2 and GD700-H2 fixed single gas monitors.

Hydrogen Sulfide (H2S) Detector

Hydrogen Sulfide (H2S) is a compound composed of one sulfur (S) atom and two hydrogen (H) atoms. Similar to phosphine, it is a colorless and highly toxic gas that can pose significant health and safety risks when present in industrial and agricultural environments. H2S is commonly encountered in various industrial processes, including petroleum refining, wastewater treatment, and natural gas production.

One of the major concerns with H2S is its extreme toxicity. Even at relatively low concentrations, exposure to H2S can lead to respiratory problems and eye irritation, and in severe cases, it can be fatal. Therefore, it is crucial to monitor H2S levels in the workplace to ensure the safety of personnel.

Additionally, H2S is a combustible gas, which adds another layer of risk. When H2S is present in an environment with oxygen, it can form explosive mixtures. Hence, it is crucial to be aware of both the toxic and combustible properties of H2S.

With GasDog GD200-H2S, GD300-H2S, GD400-H2S and GD700-H2S personal single-gas detectors, workers can monitor exposure in areas where hydrogen may be present. In areas that may contain additional gases, the GD400-4GAS, GD400- 5GAS and GA500-5GAS multi-gas monitor can detect both Hydrogen Sulfide and other gas hazards.

Methane (CH4) Detector

Methane (CH4) is a compound composed of one carbon (C) atom and four hydrogen (H) atoms. It is a colorless, odorless, and highly flammable gas at room temperature. Methane is commonly encountered in various industrial and natural settings, and it poses specific safety concerns due to its combustibility.

One of the key hazards associated with Methane is its flammability. When exposed to an open flame, spark, or other ignition source, Methane can ignite and burn, potentially leading to fires or explosions. Therefore, it is crucial to handle Methane with great care, particularly in environments where there may be sources of ignition. GasDog single gas monitor (GD200-CH4, GD300-CH4, and GD700-CH4) provides accurate and robust detection of Methane in areas where worker safety may be compromised.

Phosphine (PH3) Detector

Phosphine (PH3) is a compound consisting of one phosphorus (P) atom and three hydrogen (H) atoms. It exists as a colorless, flammable gas at room temperature and is commonly found in a variety of industrial and agricultural settings. Phosphine is used as a fumigant and reducing agent in a variety of applications but must be handled with caution due to its potential health and safety hazards. Phosphine is not only a toxic gas but also a flammable gas. When exposed to an open flame, spark, or other ignition source, it may ignite and burn, posing additional risks in some cases.

Therefore, extreme care must be taken when handling Phosphine, especially in environments where exposure to potential sources of ignition is possible. Phosphine PH3 gas detectors, such as the GasDog GD200-PH3, are dedicated devices for monitoring Phosphine levels. Users of Phosphine gas and related equipment must fully understand its properties and take all necessary precautions to ensure safe handling and storage to mitigate the associated risks.