A device that indicates gas presence without identifying the gas type is called a?

A device that indicates gas presence without identifying the gas type is called a?

• A. Multi gas monitor
• B. Gas detector badge
• C. Oxygen meter
• D. Combustible gas indicator

Answer: (A)

A device that signals there is gas in the air without naming which gas it is relies on a broad, multi-sensor instrument designed to warn about any hazardous atmosphere. A multi-gas monitor uses several sensors to cover a range of common gases, and it will trigger alarms whenever any sensor detects a hazardous level. The key idea is rapid awareness: you know gas is present and you need to take precautions, even if you don’t yet know exactly which gas is present. That makes it the best fit for indicating gas presence without identifying the specific gas. The other options have more specific roles. A gas detector badge is a passive indicator worn on the body that shows exposure history, not continuous real-time presence. An oxygen meter measures only oxygen levels, not other gases. A combustible gas indicator focuses on flammable gases and tells you about those, not about non-oxidizer or non-flammable gases.

A device that signals there is gas in the air without naming which gas it is relies on a broad, multi-sensor instrument designed to warn about any hazardous atmosphere. A multi-gas monitor uses several sensors to cover a range of common gases, and it will trigger alarms whenever any sensor detects a hazardous level. The key idea is rapid awareness: you know gas is present and you need to take precautions, even if you don’t yet know exactly which gas is present. That makes it the best fit for indicating gas presence without identifying the specific gas.

The other options have more specific roles. A gas detector badge is a passive indicator worn on the body that shows exposure history, not continuous real-time presence. An oxygen meter measures only oxygen levels, not other gases. A combustible gas indicator focuses on flammable gases and tells you about those, not about non-oxidizer or non-flammable gases.