What information does a tri indicator provide the boiler operator?

A tri indicator is an essential instrument used by boiler operators to monitor critical parameters of the boiler system. It typically provides readings that help ensure the safe and efficient operation of the boiler. The accurate answer is the one that lists the relevant metrics that a tri indicator would measure.

The correct option describes a tri indicator as providing the temperature of the water, the pressure of the water measured in psi, and the altitude of the water in feet. This information is crucial for boiler operators as it allows them to monitor the conditions within the system. Temperature readings help operators understand the thermal state of the water and prevent overheating. Pressure readings are fundamental to ensure that the boiler operates within safe limits and avoids risks such as pressure build-up, which can lead to dangerous situations. Additionally, altitude (or water level) measurements are essential to prevent low water conditions that could cause boiler damage.

Understanding this trio of measurements—temperature, pressure, and altitude—enables operators to make informed decisions regarding boiler operation and maintenance. The combination ensures that the system is functioning properly and helps prevent accidents related to improper water levels or extreme thermal conditions.