What type of gauge is typically used to display cylinder pressure for gases?

• A. Bourdon gauge
• B. Digital gauge
• C. Manometer
• D. Barometer

Answer: (A)

A Bourdon gauge is commonly used to display cylinder pressure for gases in anesthesia and other medical applications. This type of gauge operates based on a mechanical mechanism where the pressure of the gas inside a cylinder causes a coiled tube to straighten. The degree of straightening is proportional to the pressure exerted by the gas, and this movement is translated into a readable format on a dial.

Bourdon gauges are advantageous in medical settings because they provide real-time, accurate readings of gas pressure, which is critical for safe anesthesia administration. Their robustness and reliability in high-pressure environments make them ideal for this purpose.

While digital gauges are also used in some modern applications due to their ease of reading, the Bourdon gauge remains a standard in many traditional setups for its proven mechanical design. Manometers and barometers serve different functions—manometers typically measure liquid pressure or differences in gas pressure, while barometers measure atmospheric pressure. Therefore, the Bourdon gauge fits the specific needs for displaying cylinder pressure of gases in clinical environments effectively.