Which device is used to detect flammable vapors in the air?

Which device is used to detect flammable vapors in the air?

• A. Oxygen sensor
• B. Photoelectric sensor
• C. Hydrogen detector
• D. Combustible gas indicator

Answer: (D)

Devices that detect flammable vapors in the air are designed to sense combustible gases. A combustible gas indicator is the tool specifically built to sniff for flammable gases and vapors in ambient air and alert you when concentrations approach explosive ranges. It commonly uses a catalytic bead sensor to detect a wide range of hydrocarbon gases, and it often reports readings as a percent of the lower explosive limit (LEL). This direct focus on flammability makes it the best choice for judging ignition risk and guiding safety actions on scene. Oxygen sensors measure the amount of oxygen in the air, not whether gases are flammable. Hydrogen detectors are tailored for hydrogen gas specifically, not for general combustible vapors. Photoelectric sensors detect smoke particles for fire detection, not gas concentrations.

Devices that detect flammable vapors in the air are designed to sense combustible gases. A combustible gas indicator is the tool specifically built to sniff for flammable gases and vapors in ambient air and alert you when concentrations approach explosive ranges. It commonly uses a catalytic bead sensor to detect a wide range of hydrocarbon gases, and it often reports readings as a percent of the lower explosive limit (LEL). This direct focus on flammability makes it the best choice for judging ignition risk and guiding safety actions on scene.

Oxygen sensors measure the amount of oxygen in the air, not whether gases are flammable. Hydrogen detectors are tailored for hydrogen gas specifically, not for general combustible vapors. Photoelectric sensors detect smoke particles for fire detection, not gas concentrations.