A combustible gas indicator meter is...

Question 1 / 2066636eec28f7522a1c51c103

Question 1 of 2066636eec28f7522a1c51c103

A combustible gas indicator meter is calibrated to read the percentage of __________.

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Question 1 of 20

66636eec28f7522a1c51c103

A combustible gas indicator meter is calibrated to read the percentage of __________.

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🔍 Key Concepts

• lower explosive limit (LEL) vs upper explosive limit (UEL) and what a combustible gas indicator actually displays • difference between flammable (explosive) limits and autoignition • what it means when a meter shows "10%, 20%, 50%" on its scale

💭 Think About

• Ask yourself: when a combustible gas meter says "20%" on the display, 20% of what is it referring to—room air, gas concentration, or some defined safety limit? • Think about which of the choices represents a reference point used in safety practice to warn you before the atmosphere becomes ignitable. • Consider how firefighters and mariners use these meters: they often say "do not enter if it reads more than 10% of ..."—what is the "of" here?

✅ Before You Answer

• Look up the definition of lower explosive limit (LEL) and how it is used with gas meters. • Confirm whether an autoignition temperature or concentration is something a portable field meter is calibrated to, or a property found in tables. • Clarify whether flammable limit concentration is a single value or a range between lower and upper limits.

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Question 1 of 20

A combustible gas indicator meter is calibrated to read the percentage of __________.

the lower explosive limit concentration

the autoignition concentration

the flammable limit concentration

vapor to oxygen

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Question 1 / 2066636eec28f7522a1c51c103

Question 1 of 2066636eec28f7522a1c51c103

A combustible gas indicator meter is calibrated to read the percentage of __________.

Back

Question 1 of 20

66636eec28f7522a1c51c103

A combustible gas indicator meter is calibrated to read the percentage of __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed