The lifespan of oxygen sensors depends on their operating environment and maintenance, typically ranging from 18 to 24 months, suitable for most industrial settings. In special environments, such as high-temperature or corrosive conditions, the lifespan may be reduced. SSI oxygen sensors are applicable in heat treatment and carbon potential control, for carburizing, carbonitriding, and bright quenching processes, as well as for combustion control in boilers and heating furnaces, production of engine, gear, and bearing components, and for precision manufacturing and material processing. The installation and maintenance of oxygen sensors significantly impact their performance and lifespan. The installation location should avoid areas near dripping agents, fans, and high-vibration spots. Regular maintenance, including cleaning and calibration, is essential to ensure measurement accuracy.