Series 300N Carbon Dioxide Analyzers on Nyad, Inc. Nyad, Inc. - Series 300N Carbon Dioxide Analyzers
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Series 300N Carbon Dioxide Analyzers
CO2A-320N OEM · CO2A-350N NEMA 4 · CO2A-330N 19" Rack Mount · CO2A-340N Panel Mount · CO2A-370N NEMA-7X

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SERIES 300N CARBON DIOXIDE ANALYZERS

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Many gases, including CO2, absorb energy in the infrared band. This absorption is selective and occurs at specific frequencies corresponding to the resonant frequencies of bond vibrations within the molecule. Measuring a characteristic absorption enables the gas to be detected and the strength of the absorption gives a measure of the gas concentration. The CO2 sensor optics consist of an infrared source, sampling cell, infrared filter, and a detector. In addition, the sensor includes electronics to drive the source and to process the signals from the detector.

The infrared source is the hot filament of a tungsten lamp emitting a broad band of radiation. It then passes through the gas in the sample cell and then through a filter before reaching the detector. The filter selects out a very narrow bank of frequencies corresponding to a characteristic absorption band for CO2. The level of energy reaching the detector falls as the concentration of CO2 increases.


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Series 300N

Carbon Dioxide Sensor

Carbon Dioxide Accessories
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