MSA Sensor Technologies Infrared GB HD

[@georgegreen3672]

analytic detector and reference detector are different?

[@raymondzhao9557]

Does the beam splitter allow different wavelength IR to pass？ Because if the beam splitter is non-selective， the intensity of IR absorption should equal to the intensity of wavelength 2

[@InstrumentCalibration]

The measuring device is typically a single path non-dispersive infrared analyzer using narrow-band transmission filters to enable selectivity for a specific gas and a non-absorbing reference band.

[@InstrumentCalibration]

Great Explanation

[@james2845]

It reminds me if LIGO en.m.wikipedia.org/wiki/LIGO