What type of reading does a pyrometer provide?

• A. Pressure readings of the steam
• B. Reading of flue gas temperature
• C. Flow rate of hot water
• D. Condensate levels

Answer: (B)

A pyrometer is an instrument specifically designed to measure high temperatures, especially in industrial settings. Its primary function relates to the measurement of temperature in various contexts, including flue gas temperatures. In boiler systems, understanding the temperature of flue gases is critical for efficiency and safety, as this information helps in optimizing combustion processes and ensuring that emissions are within allowable limits.

This makes the measurement of flue gas temperature essential in evaluating the performance of the boiler, as it influences both the operational efficiency and the environmental compliance of the system. The other options, while relevant to boiler operations, involve different measurements that are not within the purview of what a pyrometer provides. For example, pressure readings pertain to steam systems, flow rates deal with the movement of water, and condensate levels focus on the return of water in steam systems—all of which are critical for overall system performance but do not utilize a pyrometer.