Commissioning Proline t-mass 65 PROFIBUS DP/PA
56 Endress+Hauser
Manual
This function allows entry of a user-specific heating value if the required value is different to the
following table.
Reference combustion temperature
The following reference temperatures are used:
Gas Formula Net/lower heating value Gross/upper heating value
[Mj/kg] MBtu/lb [Mj/kg] MBtu/lb
Hydrogen H
2
119.91 51.56 141.78 60.97
Ammonia NH
3
18.59 7.99 22.48 9.67
Carbon Monoxide CO 10.1 4.34 10.1 4.34
Hydrogen Sulphide H
2
S 15.2 6.54 19.49 8.38
Methane CH
4
50.02 21.51 55.52 23.87
Ethane C
2
H
6
47.5 20.43 51.93 22.33
Propane C
3
H
8
46.32 19.92 50.32 21.64
Butane C
4
H
10
45.71 19.66 49.51 21.29
Ethylene C
2
H
4
47.16 20.28 50.31 21.63
* According to ISO 6976:1995(E) and GPA Standard 2172-96
Country reference combustion temperature
Austria, Belgium, Denmark, Germany, Italy, Luxembourg,
The Netherlands, Poland, Russia, Sweden, Switzerland
25 °C
Brazil, China 20 °C
France, Japan 0°C
Australia, Canada, Czech Republic, Hungary, India, Ireland, Malaysia,
Mexico, South Africa, Great Britain
15 °C
Slovakia 25 °C
USA, Venezuela 60 °F
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