What is the purpose of a water-level gauge in a boiler?

• A. To measure the temperature of the water
• B. To indicate the level of water to prevent low water conditions
• C. To automatically refill the boiler with water
• D. To control the pressure within the boiler

Answer: (B)

The purpose of a water-level gauge in a boiler is to indicate the level of water to prevent low water conditions. Maintaining the proper water level is critical for the safe operation of a boiler, as low water levels can lead to overheating and potentially damaging the boiler or causing a hazardous situation.

The water-level gauge provides a visual representation of the current water level inside the boiler, allowing operators to monitor it continuously. This is essential for ensuring that the boiler operates efficiently and safely, as proper water levels help with effective heat transfer and steam generation.

While measuring temperature, automatically refilling water, and controlling pressure are important functions in a boiler system, these tasks are handled by other components and controls, such as temperature sensors, feedwater systems, and pressure relief valves, rather than the water-level gauge itself.