This is going to be a fairly short subject as it mostly involves math and conversion factors.
When you are going back and forth between different vacuum pump cut sheets, which many come from different countries, you get used to convert from metric to US Imperial units.
It’s a bit different when you want to switch around between flow terms.
Some are in absolute pressure, other ones are in gauge pressure.
We will use the trusty table below, then delve into the equations themselves right down below
Pressure Conversion tables
These trusty formulas and table will be needed when also converting Flows from ACFM to SCFM as described below:
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