RMG TME400-VMF - Use of Gas Meters for Different Gases

1 Introduction
Manual TME400-VMF · EN02 · 2018 September 6th
18
1.3.4.2.
Use of gas meters for different gases
Gas
Symbol
Tight-
ness at
0°C and
1.013 bar
Meter
housing
Comments
Natural gas
0.8
Standard
City gas
Standard
Methane
CH4
0.72
Standard
Ethane
C2H6
1.36
Standard
Propane
C3H8
2.02
Standard
Butane
C4H10
2.70
Standard
Air
1.29
Standard
Argon
Ar
1.78
Standard
Helium
He
0.18
Standard
Carbon dioxide (dry)
CO2
1.98
Standard
Nitrogen
N2
1.25
Standard
Hydrogen
H2
0.09
Standard
up to 100%
Generally, a reduced meas-
uring range
Ethylene (gaseous)
C2H4
1.26
Special
Special version (also for
humid gases):
Teflon coating, special lubri-
cation, special material, etc.
Biogas
Special
Sour gas
Special
Digester gas / sewage
gas
Special
Sulfur dioxide
SO2
2.93
Special
The components of the gases must be within the concentration limits according to EN
437:2009 for test gases. Safe operation is guaranteed with these specified gases.
Other gases on request.