Which indicator shows that oxygen is functioning?

Which indicator shows that oxygen is functioning?

• A. Red alarm light
• B. Green line flow indicator
• C. Blue gauge
• D. Amber LED

Answer: (B)

The key idea is that an indicator of oxygen functioning must show active delivery. A green line flow indicator is designed to display that oxygen is actively flowing through the system. The green color is commonly used to signal normal, safe operation, and the moving line or reading confirms you have real-time oxygen flow reaching the patient. Other indicators serve different purposes: a red alarm light flags an alarm condition that needs immediate action, an amber LED usually warns of a fault or service issue, and a blue gauge often relates to a different gas or a parameter not specifically confirming oxygen flow. So, seeing a green line indicating flow is the most direct evidence that oxygen is functioning. If it’s not visible, you’d check the supply path, regulator, and downstream components to diagnose the issue.

The key idea is that an indicator of oxygen functioning must show active delivery. A green line flow indicator is designed to display that oxygen is actively flowing through the system. The green color is commonly used to signal normal, safe operation, and the moving line or reading confirms you have real-time oxygen flow reaching the patient. Other indicators serve different purposes: a red alarm light flags an alarm condition that needs immediate action, an amber LED usually warns of a fault or service issue, and a blue gauge often relates to a different gas or a parameter not specifically confirming oxygen flow. So, seeing a green line indicating flow is the most direct evidence that oxygen is functioning. If it’s not visible, you’d check the supply path, regulator, and downstream components to diagnose the issue.