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CAUTION
A tightness test must be conducted once the installation work has been
completed in full and when all the gas pipelines have been connected and
pressurized.
Since the test cannot be carried out on all parts when the device is
switched off, the tightness test for these parts must be carried out first of
all when the device is running.
6.5.2 Configuration with two Carrier Gases
For some applications like the analysis of biogas a use of different carrier gases for the
two analytical modules can be an advantage. In the application Biogas for the module
from type mole sieve Argon is used as carrier gas and for the second module from type
PPU Helium is used as carrier gas. In the following picture this configuration is shown.
The two connections for the two different carrier gases are marked on the housing.
Figure 6.23: Configuration with two Carrier Gases
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