Reference: (Singapore) - Singapore Standard SS 554 : 2009 [Code of Practice for Indoor Air Quality for Air Conditioned buildings] (incorporating Erratum ,November 2009) (ASHRAE 62) – ASHRAE 62-1999 ASHRAE STANDARD : Ventilation for Acceptable indoor Air Society of Heating, Refrigerating and Air-Conditioning Engineers,inc. 1791 Tullie Circle,NE,Atlanta,GA 30329
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A nondispersive infrared sensor (or NDIR sensor) is a simple spectroscopic sensor often used as a gas is non-dispersive in the fact that no dispersive element ( a prism or diffraction grating as is often present in other spectrometers) is used to separate out (like a monochromator) the broadband light into a narrow spectrum suitable for gas sensing.
DS-CO2-20 is a kind of digital NDIR sensor, which can acquire and calculate the concentration of carbon dioxide in the air continuously . SF6 Infrared Sensor - WFS-S1-S SF6 Infrared Sensor (S1-GP-S) is based on dual-beam dual-wavelength infrared measurement technology and high-precision digital processing technology.
CM2200 Mainstream NDIR EtC02 Sensor Module Introduction Mainstream NDIR ETCO2 sensor module is designed by NDIR technology for the determination of the concentration of CO2 at the end of exhaled breath. It provides measurement of End-tidal CO2, respiration rate, and a clear, accurate capnogram at all respiratory rate up to 150 breaths per minute.