A nondispersive infrared sensor (or NDIR sensor) is a simple spectroscopic sensor often used as a gas detector.

Non-dispersive infrared absorption (NDIR) is a method using infrared absorption of molecules.This method is used to measure the concentration of various gas components that …

A NDIR type gas sensor calculates the gas concentration by using the property that gas molecules (e.g., CO2) absorb infrared rays.

Non-Dispersive Infrared (NDIR) sensors are gas sensors that detect the concentration of a specific gas in an environment by measuring the amount of infrared light absorbed by gas …

Jun 23, 2025 · NDIR is an industry term for non-dispersive infrared, a common type of sensor that’s used to measure the amount and concentration of carbon dioxide (CO₂) in a sample. …

NDIR, or Non-Dispersive Infrared, refers to a type of gas sensor technology that detects specific gases by measuring their absorption of infrared (IR) light at characteristic wavelengths.

Feb 26, 2025 · Unlike catalytic bead sensors, NDIR doesn’t require oxygen, is resistant to sensor poisoning, and has lower power consumption. However, it has limitations—it can’t detect …

The MultiRAE IR monitor uses an NDIR (non-dispersive infrared absorbance) sensor to monitor CO2. Most molecules can absorb infrared light, causing them to bend, stretch or twist. The …

NDIR sensing has become the prevalent technique for measuring CO2 concentration. The technology exploits the characteristic property of CO2 molecules to strongly absorb infra-red …

Jan 17, 2024 · A nondispersive infrared (NDIR) sensor serves as a gas sensor for detecting and quantifying gases in the atmosphere, along with their concentrations. NDIR sensors operate …