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Annexes
A
Equations used with the EC 21 temperature corrector and
the EC 24 volume corrector
Symbol
q
=
m
f
=
v
K
=
V
V
=
m
P
=
v
KZ1
=
q
=
b
V
=
b
C(p,t)
=
K
=
Z2
p
=
p
=
b
T
=
T
=
K
T
=
b
K
=
Z
=
Z
=
b
...........................................................................................................................................................................................................
Manual EC 24 · EN05 · 2015-02
Unit
Designation
m
/h
Flow rate at measurement conditions
3
Hz
Frequency of the volume transducer
P/m
Meter factor
3
m
Volume at measurement conditions
3
1
Volume pulse
m
/P
Totalizer factor (for output contacts only)
3
m
/h
Flow rate at base conditions
3
m
Volume at base conditions
3
1
Conversion factor
m
/P
Totalizer factor (for output contacts only)
3
bara,
(Absolute) pressure at measurement conditions
(barg, kg/cm
)
2
bara
Pressure at base conditions
(barg, kg/cm
)
(= 1.01325 bar absolute)
2
°C
Temperature at measurement conditions
K
Temperature at measurement conditions in Kelvin
K
Temperature at base conditions (= 273.15 K)
1
K coefficient
1
Compressibility factor at measurement conditions
1
Compressibility factor at base conditions
Z and Z
are calculated in compliance with GERG-88 as per G9.
b
ANNEXES
29
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