What is the primary use of a Bourdon Gauge in medical gas storage?

The primary use of a Bourdon Gauge in medical gas storage is to indicate the variable pressure under flow conditions. Bourdon Gauges work by measuring the pressure of a gas within a system, which is essential in healthcare settings that utilize different gases for various medical applications.

When gas flows through a system, the Bourdon Gauge reacts to changes in pressure as the flow rate varies. This function helps healthcare professionals monitor the pressure of medical gases such as oxygen, nitrous oxide, and others, ensuring they remain within safe and effective operating ranges. The ability to indicate variable pressure is particularly critical during patient care and procedures where precise gas delivery is required.

In contrast, the other options focus on different functionalities that do not align with the Bourdon Gauge's capabilities. For example, measuring true flow of oxygen or indicating fixed orifice pressure involves separate mechanisms or devices, such as flowmeters specific for those purposes. Regulating adjustable pressure typically requires a pressure regulator, which is also distinct from the Bourdon Gauge’s function. Hence, the correct answer accurately reflects the primary function of the Bourdon Gauge in medical gas systems.