What are the typical components of a boiler's control system?

The typical components of a boiler's control system are indeed pressure switches, temperature indicators, and automatic controls.

Pressure switches play a vital role in monitoring the pressure within the boiler system. They help ensure that the pressure stays within safe operating limits by automatically shutting down the boiler or activating alarms if the pressure exceeds or drops below predefined thresholds. This is critical for ensuring safety and efficient operation.

Temperature indicators provide real-time data on the temperature of the boiler water or steam, allowing operators to monitor and manage thermal conditions within the system. Maintaining the correct temperature is fundamental for optimal boiler performance and energy efficiency.

Automatic controls are integral to the operation of modern boiler systems, allowing for the automatic regulation of parameters such as pressure, temperature, and water levels. These controls enhance the safety of the system by assisting in the timely response to any anomalies, ensuring that the boiler operates in a stable and efficient manner.

Overall, option A clearly outlines essential components that specifically relate to the monitoring and control functions necessary for safe and effective boiler operation.