Operation
FLOWSIC500 · Operating Instructions · 8025733/1GMJ/V4-2/2022-07 · © SICK Engineering GmbH 91
Subject to change without notice
5.2.6.5 Conversion (only for device types with volume conversion)
References
Calculation
Gas composition (only for device option volume conversion)
Basic pressure Basic pressure [unit acc. to display]
Basic temperature Basic temperature [unit acc. to display]
Ref. conditions Reference conditions for density and heating value
Display: T1/T2/p2
T1 = Reference temperature, heating value
T2 = Reference temperature, rel. density/reference density
p2 = Reference pressure, rel. density/reference density
Atmospheric pressure Ambient pressure [unit acc. to display]
Input required for version with relative pressure sensor
Calculation method Calculation method for the compressibility factor
Select from:
● SGERG88,
● AGA 8 Gross method 1
● AGA 8 Gross method 2
● AGA NX-19
● AGA NX-19 mod.
● AGA NX-19 mod. GOST
● GERG91 mod.
● AGA8-92DC
● Fixed value
Calculation interval Cycle time for updating measured values (pressure, temperature),
calculation of the compressibility factor
Select from: 3 s, 10 s, 20 s, 30 s, 60 s
K-factor (fixed) Entry of K factor for method “Fixed value” when the calculation of the
K-factor is incorrect.
Density entry type Select from:
Reference density, relative density
Either menu item “Reference density” or menu item “Relative density” is
displayed depending on the selection.
Reference density Gas reference density under reference conditions
Relative density Relative density, relation between gas density and air density under
reference conditions
CO2 CO
2
- proportion in gas [mol%]
N2
N
2
- proportion in gas [mol%]
H2
H
2
- proportion in gas [mol%]
T1 T2 p2
Set 1 25 °C 0 °C 1.01325 bar (a)
Set 2 0 °C 0°C 1.01325 bar (a)
Set 3 15 °C 15 °C 1.01325 bar (a)
Set 4 60 °F 60 °F 14,7347 psi (a)
Set 5 60 °F 60 °F 14.7300 psi (a)
Set 6 25 °C 20°C 1.01325 bar (a)
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