50 mm (SLPM) 60 mm (SLPM) 2 psi (0.14 bar)* 15 27 4 psi (0.28 bar)* 27 57 6 psi (0.41 bar)* 38 83 10 psi (0.69 bar)* 53 139 Inlet to outlet Filtration area Maximum operating pressure Biosafety Rated retention in air in liquid) Materials of construction Connectors.If gas units are in psig, then to obtain psia, add 14.7 to the gauge pressure to get the absolute pressure (psia). psia = pounds per square inch absolute psig = pounds per square inch gauge 0 psig = 14.7 psia (most common units for gas pressure in oilfield).Liters per minute (LPM) conversion calculators, tables and definition, converts Liters per minute to other flow units.Flow Rate in SLPM of Nitrogen 200 Inlet Pressure.The symbol for pounds per square inch is psi or lbf/in 2. What is pounds per square inch (psi)? Pounds per square inch (or pound-force per square inch) is a non-SI unit of Pressure. There are 0.00689475729 megapascals in a psi. PSI A aC SETPT 0.0 SLPM A i r Process Connection K I J G C F M E H W D A B Light Switch Controls DC I/O Port In Representative Examples 250 SLPM 2000 SLPM 5000 SLPM.