Question 739Deck Safety70% to pass
When using the oxygen indicator, which reaction from the needle should you expect as a sample is drawn into the instrument?
AI Explanation
The correct answer is A) Move back and forth and finally stabilize at the correct reading after about 10 seconds.
When using an oxygen indicator, the needle is expected to move back and forth initially as the sample is drawn into the instrument. This is because the oxygen indicator needs a short period of time, typically around 10 seconds, to stabilize and provide the correct reading. The needle will not immediately jump to the correct reading, as it needs to adjust to the oxygen concentration in the sample. The other options are incorrect because they do not accurately describe the expected reaction of the needle during this process.
Related Questions
#737 Ambient air, which you normally breathe, contains what percent of oxygen? #738 After each reading of an oxygen indicator, the instrument should be purged with _______________.#740 You are using an oxygen indicator. How long should you wait after the sample is drawn into the instrument before reading the meter? #741 If the meter needle of the oxygen indicator cannot be set to zero, what should be done? #742 What is used to test a tank for oxygen content?