In nature, plants use CO2 for photosynthesis. CO2 combinate with
moisture under the action of the sun to produce sugar (and oxygen). We
know about how much Infrared CO2 sensor? How does it work?
CO2 can absorb infrared wavelengths of light. The absorption can be used
to measure the concentration of carbon dioxide per unit volume. The
infrared absorption function of CO2 is causing part of the greenhouse
effect. The greenhouse effect is one of the characteristics of all the
planet's atmosphere, it makes the planet's surface temperature is higher
than without the atmosphere. Any gas absorbs the sun's rays will lead
to the greenhouse effect, the most important greenhouse gas for surface
of the earth include: water vapor, CO2 and methane, they can absorb
infrared wavelengths of light.
Most of gas sensors could give the corresponding signal according to the
molecular density, even down to one over one million as units.
According to the ideal gas law, when the pressure and/or temperature
change, density of molecules will change, and PPM value is displayed on
the sensor. Accuratly say this is wrong, as density of the gas (in PPM)
will not change with the change of temperature and pressure. The change
of gas sensor readings can also be used to correct for the temperature
and the pressure change of gas sensor readings errors.
Considering the water vapor to the effect of CO2 sensor, the information
is very important. For example: in the same pressure, temperature and
volume, add water vapour in the process of gas drying, then water had
taken over of general mixture of other gas molecules.
Our CO2 gas sensors could be used for accurate CO2 detection.
iSweek（http://www.isweek.com/）- Industry sourcing & Wholesale industrial products
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