What is the standard unit of pressure measurement used in steam systems?

The standard unit of pressure measurement used in steam systems is pounds per square inch (psi). This unit is widely employed in the United States and is particularly relevant in contexts like steam boilers and other pressure vessels where it is crucial to monitor and control the pressure for safety and operational efficiency. Psi is a measure of pressure that indicates how much force is applied to a particular area, making it a practical choice for engineers and operators working with steam systems.

In industrial applications, psi provides a clear understanding of the pressure thresholds that need to be maintained to prevent equipment failure and ensure optimal performance. Other units like millimeters of mercury (mmHg), bar, and kilopascals (kPa) are used in various contexts; however, psi remains the prevalent measurement in many steam-related applications, particularly where historical practices and equipment specifications are concerned.