Gas Sensing Solutions (GSS) has released a new technical engineering paper demonstrating how power consumption in CO2 sensors can be minimised to reduce utility costs.
All GSS sensors use a technique called non-dispersive infra-red (NDIR) sensing where light is injected into the optical measure chamber, which contains the gas of interest.
The light that passes through the optical cavity is detected by the photo diode. The signal from the photodiode is digitised by the microcontroller and compared with a reference level stored in memory.
The microcontroller can then calculate the level of CO2 in the optical measurement chamber.
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