New York Low Pressure Boiler COF Practice

Which gauge is used to measure pressure in a boiler?

1. Thermocouple

2. Manometer

3. Pressure gauge

4. Tachometer

The correct answer is: Pressure gauge

The function of a pressure gauge is to measure the pressure within a boiler system, providing critical information about the operating conditions of the boiler. This instrument displays the pressure in a readable format, which is essential for monitoring the system's performance and safety. In the context of a boiler, maintaining the correct pressure is crucial for safe operation, preventing equipment failure, and ensuring efficient energy use. The pressure gauge typically features a dial or a digital readout that shows the pressure inside the boiler, allowing operators to take necessary actions if the pressure deviates from safe levels. Other instruments listed serve different purposes: a thermocouple measures temperature, a manometer is used for pressure measurement in some contexts but is often more specific to gas pressure, and a tachometer measures rotational speed, which is unrelated to pressure readings. Therefore, the pressure gauge is the correct instrument for measuring pressure in a boiler system.