How does a non-dispersive infrared NDIR gas sensor work?
-Using the characteristics of different gas molecules absorbing infrared
rays with specific wavelengths, NDIR sensors measure the ratio of
absorbed infrared rays and compute the density of gas (e.g. CO2 absorbs
4.26㎛ , and CO absorbs 4.64)
-NDIR is contactless and highly accurate while having an extensive longevity.
-Previously only used in manufacturing highly-priced measurement instruments,,
NDIR technologies have been recently applied in mass-producing low-cost CO2 sensors for everyday use.
iSweek（http://www.isweek.com/）- Industry sourcing & Wholesale industrial products
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