What is a NDIR gas analyzer typically made of?
A large number of materials absorb infrared (IR) radiation due to intramolecular vibrations. For any specific material the strength of absorption varies with the wavelength of the infrared radiation. This principle is often used in gas analysis. An NDIR (Non Dispersive IR) gas analyzer contains an electrically or mechanically modulated IR source, a gas chamber with the gas of interest and a pyroelectric detector. Normally a standard narrow bandpass filter (NBP) that matches the absorption wavelength of the target gas is integrated in the detector cap and simplified the gas sensor design.
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- What is a NDIR gas analyzer typically made of?
