True or False: The MultiRAE Pro is intended to be used in Normal Atmosphere and readings will be affected if oxygen levels are deficient.

True or False: The MultiRAE Pro is intended to be used in Normal Atmosphere and readings will be affected if oxygen levels are deficient.

• A. Sometimes
• B. Not sure
• C. True
• D. False

Answer: (C)

The main idea is that gas detectors rely on ambient oxygen to measure other gases accurately. Electrochemical sensors that detect gases such as CO or H2S need oxygen to drive the chemical reactions inside the sensor; when the surrounding oxygen is deficient, these sensors can respond more slowly, be less sensitive, or give inaccurate readings. The MultiRAE Pro also uses an oxygen sensor to report how much O2 is actually present, which is essential for interpreting all the other readings in environments with reduced oxygen. Because calibration and sensor response are typically set for normal atmospheric conditions, dropping oxygen levels can affect readings, making them less reliable if you don’t account for the current O2 level. So the statement is true: it is intended for normal air, and readings will be affected if oxygen is deficient.

The main idea is that gas detectors rely on ambient oxygen to measure other gases accurately. Electrochemical sensors that detect gases such as CO or H2S need oxygen to drive the chemical reactions inside the sensor; when the surrounding oxygen is deficient, these sensors can respond more slowly, be less sensitive, or give inaccurate readings. The MultiRAE Pro also uses an oxygen sensor to report how much O2 is actually present, which is essential for interpreting all the other readings in environments with reduced oxygen. Because calibration and sensor response are typically set for normal atmospheric conditions, dropping oxygen levels can affect readings, making them less reliable if you don’t account for the current O2 level. So the statement is true: it is intended for normal air, and readings will be affected if oxygen is deficient.