What is the function of a pressure gauge in a boiler system?

The function of a pressure gauge in a boiler system is to measure the pressure of steam within the boiler. This measurement is critical because it ensures the boiler operates within safe and efficient pressure limits. Operating at the correct pressure allows the boiler to produce steam effectively and ensures that the system is functioning properly.

Monitoring steam pressure serves several important purposes. It helps operators understand how much steam is being generated and whether it meets the demands of the system. Consistent pressure readings allow for adjustments to be made to maintain optimal performance and safety. If the pressure becomes too high, it may indicate a problem that requires immediate attention to prevent dangerous conditions such as boiler failure or explosion.

The other options revolve around different aspects of boiler or system operation that do not directly relate to measuring steam pressure. For instance, measuring fuel usage or monitoring airflow are essential for system efficiency but they do not pertain to the function of a pressure gauge. Controlling steam temperature is also important but is typically managed by other instruments like thermometers and control valves, not directly by a pressure gauge. Therefore, recognizing the specific role of a pressure gauge is critical for effective boiler management.