Endress+Hauser Proline 200 Brief Operating Instructions page 44

Commissioning
4. Enter the value in the Relative humidity parameter.
 The relative humidity is entered as a %. The relative humidity is converted
internally to absolute humidity and is then factored into the density calculation
according to NEL 40.
5. In the Fixed process pressure parameter, enter the value of the process pressure
present.
Configuring fluid properties
Navigation:
Setup → Advanced setup → Medium properties
6. Call up the Medium properties submenu.
7. In the Reference pressure parameter 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.
8. In the Reference temperature parameter enter the temperate for calculating the
reference density.
Endress+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, select the Gas option.
3. In the Select gas type parameter, select the Natural gas option.
4. In the Fixed process pressure parameter, enter the value of the process pressure
present.
5. In the Enthalpy calculation parameter, select one of the following options:
 AGA5
ISO 6976 option (contains GPA 2172)
6. In the Density calculation parameter, 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:
44
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