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                      Carbon 
                        dioxide measurement instruments
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                       Carbon dioxide 
                        (CO2) is one of the most common gases in our atmosphere. 
                        It is formed during breathing of humans and animals, in 
                        fermentation and decomposition processes and during the 
                        burning of fossil fuels. Plants need carbon dioxide in 
                        the assimilation process. It can therefore be used as 
                        a fertilizer to enhance plant growth. Carbon dioxide is 
                        a good indicator for indoor air quality. In large concentrations 
                        carbon dioxide is a potential safety hazard and it inhibits 
                        bacterial growth.  
                      Vaisala's carbon 
                        dioxide products are available for human and product environment 
                        control as well as for safety measurement.  
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                      Fixed 
                        Installations 
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          GMT220 
            Series Transmitters are designed to measure carbon dioxide in harsh 
            and humid environments. The housing is dust and water proof to IP65/NEMA4. | 
          
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          GMD/W20 
            GM20 Series Carbon Dioxide Transmitters are specially designed for 
            demand controlled ventilation and related applications. | 
          
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           GMW25/45 
            Carbon Dioxide Transmitters The GMW25/45 Carbon Dioxide Transmitters 
            are ideal for monitoring the air quality in public, commercial and 
            residential buildings.  | 
          
           
            Portables
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           GM70 
            Hand-held Carbon Dioxide Meter Hand-held meter for various spot-checking 
            applications, like laboratories, greenhouses and mushroom farms.  | 
          
           
            OEM 
              Modules
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          GMM220 
            The modules are optimized for integration into equipment for greenhouse 
            control, incubators, fermentors, safety alarming and integrated systems. | 
          
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          GMM20W 
            Carbon Dioxide Module Module for HVAC applications. | 
        
        
      
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