What device is used to measure temperature in a boiler system?

In a boiler system, the device that is used to measure temperature effectively is a thermocouple. A thermocouple operates on the principle of thermoelectric effect, which generates a small voltage that corresponds to temperature differences between two junctions made of dissimilar metals. This allows for accurate, real-time measurements of temperature at various points within the boiler system.

Understanding the purpose of other devices clarifies why they do not serve this function. For instance, flow meters are primarily utilized to measure the flow rate of liquids or gases in a system, providing insights into the volume or mass of fluids moving through pipelines. Pressure gauges, on the other hand, measure the pressure within a system, which is crucial for monitoring operational conditions and ensuring safety standards but does not provide information about temperature. Manometers are specialized devices for measuring pressure in a liquid column or gases but do not measure temperature directly.

Thus, the use of a thermocouple in a boiler system is essential for maintaining optimal operating conditions and ensuring safety through accurate temperature monitoring.