You are using an oxygen indicator. How long...

Question 1 / 2707066636eec28f7522a1c51d065

Question 1 of 2707066636eec28f7522a1c51d065

You are using an oxygen indicator. How long should you wait after the sample is drawn into the instrument before reading the meter?

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Question 1 of 27070

You are using an oxygen indicator. How long should you wait after the sample is drawn into the instrument before reading the meter?

🔍 Key Concepts

• Response time of gas detection instruments such as oxygen indicators • Manufacturer’s recommended stabilization or sampling time before taking a reading • Difference between real-time sensors and those that require a brief delay for an accurate measurement

💭 Think About

• Think about whether gas concentration readings change instantly, or whether the instrument usually needs a short period to stabilize after drawing in a sample. • Consider what would be safer in a confined space: taking the very first flickering reading, or waiting a short, specific time for a stable value. • Compare the options and ask: which time delay is commonly associated with letting a meter settle, without being unnecessarily long?

✅ Before You Answer

• Check what a typical oxygen indicator response time is in training materials or manufacturer guides. • Verify whether the exam is likely to prefer a specific settling time rather than saying "immediate" or a very long delay. • Confirm that the chosen option allows the reading on the meter to stabilize rather than relying on an instantaneous, possibly fluctuating value.

Question 1 of 27070

You are using an oxygen indicator. How long should you wait after the sample is drawn into the instrument before reading the meter?

At least 20 seconds

No wait is necessary, the reading occurs immediately.

At least 10 seconds

At least 5 seconds

Question 1 / 2707066636eec28f7522a1c51d065

Question 1 of 2707066636eec28f7522a1c51d065

You are using an oxygen indicator. How long should you wait after the sample is drawn into the instrument before reading the meter?

Back

Question 1 of 27070

You are using an oxygen indicator. How long should you wait after the sample is drawn into the instrument before reading the meter?