RUSKA 2470
Users Manual
Nitrogen Density — SI Units (0 to 6.9 MPa)
To calculate the density of Nitrogen at pressures from 0.01 MPa gauge to 6.9 MPa, use the following equation;
DENSITY (kg / m3 )= (1.1347 E − 05) x P
where;
P = PRESSURE in Pa absolute (if P is in gauge, convert it to Pa absolute by adding barometric pressure, e.g. P + 101325 )
Nitrogen Density — SI Units (6.9 MPa to 100 MPa)
To calculate the density of Nitrogen at pressures from 6.9 MPa gauge to 100 MPa, use the following equation;
DENSITY (kg / m3 )= 6.573 + (11.016)P − (0.055087)P2
where;
P = PRESSURE in MPa absolute (if P is in gauge, convert it to MPa absolute by adding barometric pressure, e.g. P + 101325 )
Zero Air Density — SI Units (0 MPa to 20.7 MPa)
To calculate the density of Zero Air at pressures to 20.7 MPa, use the following equation; DESNSITY (kg / m3 )= (1.17 E − 05) x P
where;
P = PRESSURE in Pa absolute (if P is in gauge, convert it to Pa absolute by adding barometric pressure, e.g. P + 101325 )
Helium Density — SI Units (0 to 6.9 MPa)
To calculate the density of Nitrogen at pressures from 0.01 MPa gauge to 6.9 MPa, use the following equation;
DENSITY (kg / m3 )= (1.585 E − 06) x P
where;
P = PRESSURE in Pa absolute (if P is in gauge, convert it to Pa absolute by adding barometric pressure, e.g. P + 101325 )
Helium Density — SI Units (6.9 MPa to 100 MPa)
To calculate the density of Nitrogen at pressures from 6.9 MPa gauge to 100 MPa, use the following equation;
DENSITY (kg / m3 )= 0.3136 E − 01 + (1.508)P − (3.886 E − 03)P2
where;
P = PRESSURE in MPa absolute (if P is in gauge, convert it to MPa absolute by
P + 0.101325 )
