Commissioning
Proline t-mass 65 PROFIBUS DP/PA
56
Hauser
7.3.5
"Heat Flow" Quick Setup menu
The measuring device can calculate and output the heat of combustion of common fuel gases
such as methane, natural gas, propane, butane, ethane and hydrogen.
This Quick Setup menu can be used to program the method to calculate the net calorific value
or gross calorific value. The measuring device can be configured to give two independent
heating value outputs and totalized values. For example, the pipeline has either natural gas
or propane running at separate times and the heating value is required for both gases.
A0009909-en
Calculation mode 1 and 2
• The heating value for CALCULATION MODE 1 corresponds to the settings in the function
GAS GROUP 1.
• The heating value for CALCULATION MODE 2 corresponds to the settings in the function
GAS GROUP 2.
!
Note!
• If only one gas group is used, then leave mode 2 as default settings.
• The units of measure are selected in the system units section
50.
Auto Gross
The gross heating value (or higher heating value) is the total heat obtained by complete
combustion at constant pressure of a volume of gas in air, including the heat released by the
water vapor in the combustion products (gas, air and combustion products taken at refer-
ence cumbustion temperature and standard pressure).
Auto Net
The net heating value (or lower heating value) is determined by subtracting the heat of
vaporization of the water vapor from the higher heating value. This treats any water formed
as water vapor. The energy required to vaporize the water therefore is not realized as heat.
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Summary of Contents for Proline t-mass 65 PROFIBUS DA
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