When using the combustible gas indicator, a...

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Question 1 of 2066636eec28f7522a1c51d04a

When using the combustible gas indicator, a special filter for filtering the incoming sample must be used if the atmosphere being tested contains vapors of __________.

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Question 1 of 20

66636eec28f7522a1c51d04a

When using the combustible gas indicator, a special filter for filtering the incoming sample must be used if the atmosphere being tested contains vapors of __________.

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🔍 Key Concepts

• Combustible gas indicators (CGI) are usually calibrated to a specific reference gas, often methane or hexane • Some vapors can poison or deactivate the sensor element in a CGI, requiring a special protective filter • Think about which listed substance can cause catalytic-bead sensor poisoning or serious corrosion/chemical attack

💭 Think About

• Which of these vapors is known to permanently damage or poison catalytic-type gas detectors, rather than just giving a false reading? • Does the CGI need special protection more for toxic/corrosive or sensor-poisoning vapors, or for common hydrocarbon fuels it is designed to detect? • Among the options, which substance would a shipboard safety procedure most likely single out as needing extra precautions when testing with a CGI?

✅ Before You Answer

• Identify which choice is highly corrosive or chemically reactive with sensor materials, not just flammable or asphyxiating • Recall that some gas detector manuals warn about sensor poisoning by certain compounds (e.g., sulfur- or halogen-containing vapors) • Before choosing, ask: which option would most likely damage the internal sensing element of a combustible gas indicator without this special filter?

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Question 1 of 2066636eec28f7522a1c51d04a

When using the combustible gas indicator, a special filter for filtering the incoming sample must be used if the atmosphere being tested contains vapors of __________.

Back

Question 1 of 20

66636eec28f7522a1c51d04a

When using the combustible gas indicator, a special filter for filtering the incoming sample must be used if the atmosphere being tested contains vapors 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

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