What is the equivalent of 32 psia in psig?

To convert from pounds per square inch absolute (psia) to pounds per square inch gauge (psig), you must account for the atmospheric pressure, which is typically about 14.7 psi at sea level. Psig measures pressure relative to atmospheric pressure, while psia measures pressure relative to a complete vacuum.

Given that 32 psia represents the absolute pressure, you subtract the atmospheric pressure (14.7 psi) from this value:

32 psia - 14.7 psi = 17.3 psig

This calculation illustrates that the correct conversion from 32 psia to psig yields 17.3 psig, making it the proper answer. Understanding this conversion is essential for proper pressure readings in refrigeration operations, as it helps operators interpret their gauge readings accurately in relation to ambient conditions.