An instrument used to detect explosive...

Question 1 of 270705eccef9ebacbc34ba4d465bb

An instrument used to detect explosive gas/air mixtures, usually measures the concentration in terms of the lower explosive limit, and is known as a __________.

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Question 1 of 27070

An instrument used to detect explosive gas/air mixtures, usually measures the concentration in terms of the lower explosive limit, and is known as a __________.

🔍 Key Concepts

• Lower Explosive Limit (LEL) and what kind of hazards it relates to • Difference between detecting combustible/explosive gases and toxic vapors • Common shipboard gas detection instruments used in enclosed spaces and cargo tanks

💭 Think About

• Ask yourself: which instrument name is most directly associated with measuring how close a gas mixture is to igniting or exploding? • Consider which device is typically calibrated in percent of the lower explosive limit rather than in parts per million (ppm) or other toxicity units. • Think about emergency response: when checking a space for risk of explosion before entry, which of these instruments would you expect the safety team to carry?

✅ Before You Answer

• Verify which option specifically includes the word or idea of combustible or explosive properties, not toxicity. • Confirm which device is standard for checking if a space is below 100% of the LEL before it is declared safe from explosion risk. • Eliminate any instruments that are mainly used for toxic exposure limits (health hazard) rather than fire/explosion hazards (flammability).