Proline 200 HART
Commissioning
Hauser
43
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 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 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 flow. The error resulting from this
assumption (typically 1 to 5 %) is often considerably smaller than the error caused by
inaccurate composition data. This method should not be used for condensing gases (e. g.
saturated steam).
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
User-specific gas
option.
4. For non-flammable gas:
In the
Enthalpy type
parameter, select the
Heat
option.
Configuring fluid properties
Navigation:
Setup → Advanced setup → Medium properties
5. Call up the
Medium properties
submenu.