How do sensor lifespan and calibration intervals affect instrument maintenance?

Sensor lifespan is typically 1-3 years; electrochemical sensors have a shorter life (2-3 years), while infrared sensors can last over 5 years. The calibration interval is generally 6-12 months, requiring two-point calibration with standard gases to ensure accuracy. Regular maintenance extends the instrument’s life, prevents data drift caused by sensor aging, and ensures compliance with regulations (such as the “Work Safety Law” which mandates regular testing of safety equipment).