If the meter needle of the oxygen indicator...

Question 1 / 2707066636eec28f7522a1c51c70c

Question 1 of 2707066636eec28f7522a1c51c70c

If the meter needle of the oxygen indicator cannot be set to zero, what should be done?

Question 1 of 27070

If the meter needle of the oxygen indicator cannot be set to zero, what should be done?

🔍 Key Concepts

• Proper use and calibration of oxygen indicators before taking measurements • What it means when an instrument cannot be zeroed and how that affects readings • Manufacturer’s standard operating procedure for correcting an offset on an analog meter

💭 Think About

• If a meter needle is not on zero before use, how would that affect every reading you take with it? • Which of the listed actions directly solves a known offset in the displayed value, and which are more like troubleshooting steps for total failure or malfunction? • Think about standard practice with other analog gauges: what do you normally do when they read slightly high or low at rest but are otherwise functioning?

✅ Before You Answer

• Identify which option deals with correcting the reading itself, not repairing hardware. • Ask whether the symptom described is a small zero offset or a complete instrument failure; choose the response that matches a simple offset. • Verify that the chosen option would give you accurate measured values immediately, without needing to disassemble or repair the instrument.

Question 1 of 27070

If the meter needle of the oxygen indicator cannot be set to zero, what should be done?

Adjust the final reading by the amount the needle is displaced from zero.

Replace the batteries.

Replace the platinum filament.

Check the sampling tube for blockage.

Question 1 / 2707066636eec28f7522a1c51c70c

Question 1 of 2707066636eec28f7522a1c51c70c

If the meter needle of the oxygen indicator cannot be set to zero, what should be done?

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Question 1 of 27070

If the meter needle of the oxygen indicator cannot be set to zero, what should be done?