Non-dispersive infrared (NDIR) analyzers are essential tools for quantifying carbon dioxide (CO₂), carbon monoxide (CO), nitrous oxide (N₂O), and hydrocarbons.
- Principle: Target gases absorb IR radiation at specific wavelengths. The amount of absorption corresponds to the gas concentration.
- EP Use Case: Standard for assessing CO and CO₂ in medical oxygen, compressed air, and nitrous oxide.
- Advantages: Robust, fast-response measurement with minimal maintenance needs.


