What is the function of the indicator gauge on an emergency oxygen system?

The function of the indicator gauge on an emergency oxygen system primarily revolves around displaying the amount of oxygen available in the cylinder. This is crucial for lifeguards and first responders, as knowing how much oxygen is left can determine whether there is sufficient supply for a patient in need. An accurate reading of the oxygen level enables the responder to take appropriate action, ensuring that the individual receives the necessary oxygen for adequate breathing, which is vital in emergency situations.

While the pressure in the cylinder can be related to the amount of oxygen available, it does not directly indicate the remaining quantity since the pressure may vary based on the cylinder size and temperature. The gauge does not measure temperature; oxygen temperature is generally not relevant in emergency situations. Additionally, it does not measure the flow rate of oxygen, which is a separate concern that would typically be monitored with different equipment. Thus, focusing on the gauge’s function of indicating the amount of oxygen allows lifeguards to manage the emergency response effectively.