AO2000 CONTINUOUS GAS ANALYZERS  |  OI/AO2000-EN REV. B  99
 
 
 
Exhaust air connection 
Conduct exhaust air directly into the atmosphere at zero pressure through a 
line with a large internal diameter which is as short as possible, or into a gas 
discharge line. 
Use an exhaust air line of PTFE or stainless steel! The temperature of the 
medium can be up to 200 °C! Lay the exhaust air line with a downward gra-
dient. 
The inside diameter of the exhaust line should be increased to ≥ 10 mm 
within no more than 30 cm from the exhaust outlet. If a very long exhaust air 
line is used, it's inside diameter must be much larger than 10 mm; otherwise 
the pressure regulation in the gas analyzer may not work properly. 
Do not conduct waste air via restrictions or shut-off valves!   
NOTE 
Dispose of corrosive, toxic or combustible exhaust gases according to the 
regulations!