Installing the Gas Analyzer  79 
 
Fidas24: Connecting the Sample Gas Line (Unheated Sample Gas 
Connection) 
ATTENTION 
If a plastic vent plug has been inserted in the sample gas inlet in the 
factory, it must be removed without fail before commissioning the 
analyzer module! 
Connection of the sample gas line 
The unheated sample gas connection has only one sample gas inlet. 
If the sample gas is under positive pressure, a T-piece must be 
connected between the sample gas line and the sample gas inlet. The 
free connection of the T-piece must be connected to a exhaust gas 
discharge line, so that no positive pressure builds up in the analyzer 
module. 
Connection of the sample gas line to the unheated sample gas connection  
19-inch housing (view from top left) 
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