Maximizing the lifetime of carbon or oxygen sensors is not guaranteed and is dramatically reduced if they are physically damaged by shock or vibration, contamination from chemicals, the environment in which it is used in, and lastly on whether the heat supply is too low or too high for that particular sensor.
An excerpt:
“Are you not getting the life that you would expect from your carbon/oxygen probe? There are some fundamental procedures that should be performed properly to maximize probe life. This technical tip covering probes is from Jim Oakes of Super Systems, Inc. Jim’s tip suggests some fundamental procedures that should be performed properly to maximize carbon/oxygen probe life.”
Source: Heat Treat Today