If a gauge reads 150psi, what would be the absolute pressure?

To determine the absolute pressure when given a gauge pressure, it is essential to understand the relationship between gauge pressure and absolute pressure. Gauge pressure measures the pressure relative to atmospheric pressure, meaning that it does not account for the atmospheric pressure acting on the fluid.

In this case, the gauge reads 150 psi. Standard atmospheric pressure at sea level is approximately 14.7 psi. To find the absolute pressure, you need to add the atmospheric pressure to the gauge pressure:

Absolute Pressure = Gauge Pressure + Atmospheric Pressure

By substituting the given values:

Absolute Pressure = 150 psi + 14.7 psi = 164.7 psi

This calculation confirms that the absolute pressure, taking into account standard atmospheric conditions, is indeed 164.7 psi. Understanding this relationship is crucial in various engineering applications, as absolute pressure is often required for calculations involving thermodynamic processes and fluid behavior.