Co2 Sensor

Replies

• 

  Rupam Das

  EEnano

  hi everyone
  
  i'm working on a project about Co2 sensor but one of the problem i'm running into is finding a 3.3v sensor that have specification of :0ppm-10000ppm, operating temperature of: -25- +25. i found one before before but the operating voltage was 5v. does anyone out there have some knowledge in this?
  
  Thanks
  EEnano

  [Sensor op Vin]
  |
  R1
  |
  |___________[3.3 v range Vout]
  |
  |
  R2
  |
  |
  GND
• 

  Rupam Das

  If you are in final year, I will assume you know the formula for Calculating R1 and R2 of a voltage divider circuit.
  
  Vout=Vin*R2/(R1+R2);
  
  470, and a potentiometer will do.
• 

  Ramani Aswath

  EEnano

  finding a 3.3v sensor that have specification of :0ppm-10000ppm, operating temperature of: -25- +25.

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