Prove the translation of pressure notation
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I saw it on an American drawing, where the operating pressure was indicated as “2#/SQ.IN”. It should be “2 pounds per square inch”, is that correct? This post was last edited by smxkjt on 2009-3-23 10:17.]
2#/SQ.IN should be 2 pounds per square inch, that is, 2PSI. 1 bar = 14.7 psi, 2 psi = 0.136 bar = 136 mbar. But it’s not clear whether it’s gauge pressure or absolute pressure; if it’s gauge pressure, it seems quite low. If it is absolute pressure, that is, in a vacuum condition.
sq/in = square inch: square inches (area). But I still can’t figure out what unit 2# represents!