Nitrogen density — si units (0 to 6.9 mpa), Nitrogen density — si units (6.9 mpa to 100 mpa), Zero air density — si units (0 mpa to 20.7 mpa) – Fluke RUSKA 2470 User Manual
Page 70: Helium density — si units (0 to 6.9 mpa), Helium density — si units (6.9 mpa to 100 mpa)
RUSKA 2470
Users Manual
B-2
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;
(
) (
)
P
x
E
m
kg
DENSITY
05
1347
.
1
/
3
−
=
where;
PRESSURE
P
=
in Pa absolute (if P is in gauge, convert it to Pa absolute by adding
barometric pressure, e.g.
101325
P
+
)
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;
(
)
(
) (
)
2
3
0.055087
016
.
11
573
.
6
/
P
P
m
kg
DENSITY
−
+
=
where;
PRESSURE
P
=
in MPa absolute (if P is in gauge, convert it to MPa absolute by
adding barometric pressure, e.g.
101325
P
+
)
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;
(
)
(
)
P
x
E
m
kg
DESNSITY
05
17
.
1
/
3
−
=
where;
PRESSURE
P
=
in Pa absolute (if P is in gauge, convert it to Pa absolute by adding
barometric pressure, e.g.
101325
P
+
)
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;
(
) (
)
P
x
E
m
kg
DENSITY
06
585
.
1
/
3
−
=
where;
PRESSURE
P
=
in Pa absolute (if P is in gauge, convert it to Pa absolute by adding
barometric pressure, e.g.
101325
P
+
)
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;
(
)
(
)
(
)
2
3
03
886
.
3
508
.
1
01
3136
.
0
/
P
E
P
E
m
kg
DENSITY
−
−
+
−
=
where;
PRESSURE
P
=
in MPa absolute (if P is in gauge, convert it to MPa absolute by
adding barometric pressure, e.g.
101325
.
0
+
P
)