Endress+Hauser Proline Prowirl F 200, Operating Instructions Manual

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Commissioning Proline Prowirl F 200 PROFIBUS PA
124 Hauser
8. In the Reference temperature parameter (→  86) enter the temperate for
calculating the reference density.
Hauser recommends the use of active pressure compensation. This fully rules
out the risk of measured errors due to pressure variations and incorrect entries .
Natural gas
Select medium
Navigation:
Setup → Medium selection
1. Call up the Medium selection wizard.
2. In the Select medium parameter (→  72), select the Gas option.
3. In the Select gas type parameter (→  72), select the Natural gas option.
4. In the Fixed process pressure parameter (→  73), enter the value of the process
pressure present.
5. In the Enthalpy calculation parameter (→  73), select one of the following
options:
 AGA5
ISO 6976 option (contains GPA 2172)
6. In the Density calculation parameter (→  73), select one of the following options.
 AGA Nx19
ISO 12213- 2 option (contains AGA8-DC92)
ISO 12213- 3 option (contains SGERG-88, AGA8 Gross Method 1)
Configuring fluid properties
Navigation:
Setup → Advanced setup → Medium properties
7. Call up the Medium properties submenu.
8. In the Calorific value type parameter, select one of the options.
9. n the Reference gross calorific value parameter, enter the reference gross calorific
value of the natural gas.
10. In the Reference pressure parameter (→  86) enter the reference pressure for
calculating the reference density.
 Pressure that is used as a static reference for combustion. This makes it possible
to compare combustion processes at different pressures.
11. In the Reference temperature parameter (→  86) enter the temperate for
calculating the reference density.
12. In the Relative density parameter, enter the relative density of the natural gas.
Hauser recommends the use of active pressure compensation. This fully rules
out the risk of measured errors due to pressure variations and incorrect entries .
Ideal gas
The unit "corrected volume flow" is often used to measure industrial gas mixtures, in
particular natural gas. To do so, the calculated mass flow is divided by a reference density.
To calculate the mass flow, knowledge of the exact composition of the gas is essential. In
practice, however, this information is often not available (e. g. as it varies over time). In
this case, it can be useful to regard the gas as an ideal gas. This means that only the
operating temperature and operating pressure variables as well as the reference
temperature and reference pressure variables are needed to calculate the corrected volume