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ADPD188BI Recommended for New Designs
The ADPD188BI is a complete photometric system for smoke detection using optical dual wavelength technology. The module integrates a highly efficient photometric...
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ADPD188BI on Analog.com

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ADPD188BI - Application for CO2 Measurement

		
	
				

			

									
					    MaRkU5
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 18, 2023 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
    
		      		            		        
    Category: Hardware
    
    		        		        		    		    
    
		    		    
		    			
    
			    
    Hello,
    

    

    I currently use the ADPD188BI as a smoke detector. Can anybody explain if it is possible to measure CO2 concentration with this module (calibration required) since it incorporates an IR LED and suitable detector and the smoke chamber which are similar components used for pure CO2 detection.
    

    

    Best regards
    

    

    Markus
    
			
    
			
									
		                             
                        

    
    
                                            
                 hardware
                
                                                    
                 Optical Sensing Technology
                
                                                    
                 CO2 measurement
                
                                                    
                 Optical Mixed Signal Devices
                
                                                    
                 ADPD188BI
                
                                
            
    
    
    
		
    

				
				        
        		
    
			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		
    

        
        
        
    
					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Feb 14, 2023 10:46 AM
            
            
						
			            		
      
		
								
	
      

		
		
      
		
      
                                
                                                            
      
					
      No, CO2 detection with the ADPD188BI is not possible.  C02 absorbs primarily at an IR wavelength with peaks at 2um 2.7um and 4.3um.  The IR used in the smoke detector is 880nm or 0.88 microns.  the ADPD188BI uses a silicon detector.  Silicon becomes transparent above 1um.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
				
						
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Feb 14, 2023 10:46 AM
            
            
						
			            		
      
		
								
	
      

		
		
      
		
      
                                
                                                            
      
					
      No, CO2 detection with the ADPD188BI is not possible.  C02 absorbs primarily at an IR wavelength with peaks at 2um 2.7um and 4.3um.  The IR used in the smoke detector is 880nm or 0.88 microns.  the ADPD188BI uses a silicon detector.  Silicon becomes transparent above 1um.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
				
						
				
				
		
		
      
			
		
      
	
      

      

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