Find the terms by letter
NDIR
Definition
NDIR stands for nondispersive infrared. It’s a type of sensor that uses infrared light to detect and measure the concentration of gases. NDIR sensors are often used to detect carbon dioxide (CO2), nitrogen dioxide, and sulfur dioxide. The majority of NDIR sensors use a broadband lamp source and an optical filter to select a narrow band spectral region that overlaps with the absorption region of the gas of interest.
Definition and Description
NDIR stands for Non-Dispersive Infrared, which is a method of gas analysis used to measure the concentration of specific gases in a sample. This technique relies on the absorption of infrared light at specific wavelengths by the molecules of the target gas. In an NDIR gas analyzer, an infrared light source emits a beam of light through the gas sample, and a detector measures the intensity of the light after it has passed through the sample. The degree of absorption of infrared light is proportional to the concentration of the target gas, allowing for accurate and selective gas concentration measurements. NDIR is commonly used in various applications, including environmental monitoring, industrial gas analysis, and indoor air quality measurement.
