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2.5 System of Units

The default units for the physical quantities can be either according to the International System of Units (SI) or English Engineering Units. However, the units can also be changed to other available units, as mentioned in View menu. These units are shown in the table below:

 Physical Quantities Default System of Units Available units
International system of units English Engineering Units
Distance m ft cm, mm, um, in, yd, mi, nmi, A, km
Frequency Hz Hz kHz
Volume m3 ft3 cm3, L, gal
Temperature K F C, R
Pressure Pa psi N/m2, lbf/ft2, kPa, MPa, bar, atm, mH2O
Power W ft-lbf/s N-m/s, lbf-ft/s, kW, hp, hpm
Mass Flow kg/s pph lbm/s, kg/min
Rotation Speed rpm rpm deg/s, rpm, rps
Standard Flow sccm sccm slm, smm, sms
Density kg/m3 lbm/ft3  
Time s s ms, min, h
Velocity m/s ft/s km/h, mph, knot
Volumetric Flow m3/s gpm ft3/s, cm3/min, L/min
Force N lbf kN
Energy J ft-lbf N-m, lbf-ft, kJ
Mass kg lbm g, oz
Angle deg deg rad
Angular Velocity rad/s rad/s deg/s, rpm, rps
Amount of Substance kmol kmol mol
Viscosity Pa-s psi-s P

 

 

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