Serinus 44  User Manual  3.0 
 
 
1.5  Instrument Description 
The major components of the Serinus 44 are described below: 
 
Figure 3 – Internal Components Diagram 
1.5.1  Calibration Valve Manifold 
The calibration valve manifold switches between sample, calibration and background gas.  
1.5.2  Auxiliary Valve Manifold 
The auxiliary valve manifold switches sample gas between NO, NO
X
 and N
X
 flow paths along with 
background and bypass flow paths. 
1.5.3  Particulate Filters 
The particulate filters are Teflon 5 micron (µm) filters with a diameter of 47mm. These filters 
eliminate all particles larger than 5µm that could interfere with sample measurement. One filter is 
for the NO and NO
X
 sample paths and the other the N
X 
sample
 
path.