Final answer:
An oxygen flow meter should be located above other gas inlets to prevent dilution and ensure accurate measurements.
Step-by-step explanation:
An oxygen flow meter should be located above other gas inlets. The reason for this is that oxygen is denser than air, so it tends to sink to lower levels. Placing the oxygen flow meter above other gas inlets ensures that it accurately measures the flow of oxygen and prevents it from being diluted by other gases.
For example if the oxygen flow meter were located below other gas inlets there is a risk that other gases, such as nitrogen or carbon dioxide could mix with the oxygen and impact the accuracy of the measurements.