LumaSense Technologies INNOVA 1316A-3 - Manual (Page 12)

Chapter 1
_________________________________________________________________________________________
_____________________________________________________________________________
BE6024-12 1316A-3 Multi Gas Monitor LumaSense Technologies A/S
Instruction Manual Page 12 of 96
Figure 1.2 Simple NDIR Gas Monitor
1.4.2 The Infrared Transmission Spectra.
The concentration of a subject gas in the sample is computed as a
function of the light intensity measured by the detector. The figure
below characterizes the absorption and band pass filter curves for
Ethanol, CO, and CO
2
gases.
Figure 1.3 Infrared Transmission Spectra for Ethanol, Carbon Monoxide
and Carbon Dioxide.