EL3000 CONTINUOUS GAS ANALYZERS |  CI/EL3000-EN REV. C  45 
 
Gas connections Uras26 (model EL3040) 
 
 
Figure 6:  Gas connections Uras26 (model EL3040) 
 
Uras26: Gas connections 
 
Supplementary information 
 
 
The pressure sensor is connected to the 
Pos. 1 terminal if 
the internal gas lines are designed as stainless steel pipes, 
or if the ‘Pressure sensor connected outside by hose’ option 
is ordered. 
⅛ NPT female thread (stainless steel 1.4305)
 
  Connection of hose lines: 
straight screw-in socket (PP) with 
for hoses with inside diameter 4 mm (included 
in scope of delivery) 
  Connection of piping: 
screw-in fittings (not included in scope of 
delivery) 
Sample gas inlet (gas path 1) 
 
Sample gas outlet (gas path
 1) 
measuring cell and for two measuring cells with 
Purge gas inlet (housing) 
Purge gas outlet (housing) 
Sample gas inlet (gas path 2) 
 
Sample gas outlet (gas path 2) 
Sample gas outlet (gas path 1) 
For two sample cells in series 
Sample cell 1 flowing reference gas
 
 
Note 
•  If the internal gas lines ares designed as hoses, the pressure sensor (standard, not for the ‘pressure sensor connected to outside 
by hose’ option), and the oxygen sensor (option) are internally connected as follows: 
–  In the output of measuring cell 1, for one measuring cell and for two measuring cells with separate gas paths. 
–  In the output of measuring cell 2 for two measuring cells in a series. 
–  The second oxygen sensor (option for version with separate gas paths) is connected in the outlet of sample cell 2. 
•  If the internal gas lines are designed as stainless steel pipes, the oxygen sensor and the version with separated gas paths are not 
possible.