What is the most common pressure measurement found in the US process industry?
A) Differential pressure (psid)
B) Pounds per square inch (psi)
C) Inches of mercury (inHg)
D) Pounds per square inch absolute (psia)
Answer: B
Explanation: A) Incorrect. Differential pressure is the difference between measurements taken from two separate points in a process unit.
B) Correct. Pounds per square inch (psi) is the most common measurement found in industry.
C) Incorrect. Pounds per square inch (psi) is the most common measurement found in industry.
D) Incorrect. Pounds per square inch absolute (psia) is a pressure measurement referenced to a vacuum.
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