Calculations
Tankvision
32
Hauser
Typical table example: 54B (1980)
L00-NXA82xxx-16-00-00-xx-046
Special corrections
VCF Chemical 1
L00-NXA82xxx-16-00-00-xx-049
with:
• D
Ref
= Reference density
• T
Obs
= Actual or observed temperature
• T
Ref
= Reference Temperature
• A-E = Configurable coefficients
TCF Method
L00-NXA82xxx-16-00-00-xx-050
with:
• K
0
, K
1
, K
2
, K
3
, K
4
= Customer coefficients
• t = Actual product temperature
• T
Ref
= Reference Temperature
For the VCF we can write:
L00-NXA82xxx-16-00-00-xx-051
With the TCF method the p
Ref
can be calculated with p
Obs
/ VCF (when manual p
Obs
is
provided) and an actual p
Obs
can be calculated with p
Ref
x VCF, when p
Ref
is known and
no actual p
Obs
is available.
The range of application:
Density, kg/m³
Temperature, °C
653.0 to 778.5
-18.0 to 90.0
779.0 to 824.0
-18.0 to 125.0
824.5 to 1075.0
-18.0 to 150.0
VCF
=
EXP
[-
t(1
.
0
+
0
.
8
t)
]
a D
a D
15
15
K =
3
4
6
.4
228
0
K =
0
.4
388
1
where
:
+
D
t
=
DEGC
-
15
.
0
a
15
=
K
0
K
1
p
15
p
15
2
VCF
= {
D
- A
10E3
(T
-
T )
-
B
10E3
(T
-
T )
-
C
10E3
(T
-
T )
-
D
10E3
(T
-
T )
-
E
10E3
(T
-
T )
} /
D
Ref
Obs
Ref
obs
Ref
Obs
Ref
Obs
Ref
Obs
Ref
Ref
´
´
´
´
´
´
´
´
´
´
2
3
4
5
TCF
= K
0
+ K
1
t
+ K
2
´ D
´ D
´ D
´ D
t
+ K
3
t
+ K4
t
2
3
4
D
t
=
t
-
T
Ref
TCF
=
1
-
TCF
(T
-
T )
´
Obs
Ref