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Sensors and probes : CO2 gas sensor

CO2 gas sensor


The CO2 Gas Sensor measures gaseous carbon dioxide in tworanges–0 to 10,000 ppm and 0 to 100,000 ppm. With this sensor, you can easily monitor changes in CO2 levels occurring in respiration of organisms ranging from peas to humans. A 250 mL respiration chamber with probe attachment is included for running controlled experiments with small plants and animals.

  • On the high range, you can explore human respiratory changes in CO2 levels based on exercise.
  • The lower range offers more sensitivity and a wider interval for cellular respiration and photosynthetic metabolism studies.



  • Response time: 95% of full-scale reading in 120 seconds
  • Warm-up time: 90 seconds
  • Pressure effect: 0.19% of reading/mm of Hg from standard pressure
  • Output signal range: 0-4.0 V
  • Gas sampling mode: diffusion
  • Normal operating temperature range: 25°C (±5°C)
  • Operating humidity range: 5–95% (non-condensing)
  • Storage temperature range: –40 to 65°C
  • Measurement Range:
  • Low range: 0 to 10,000 ppm CO2
  • High range: 0 to 100,000 ppm CO2
  • Typical Accuracy (at standard pressure, 1 atm):
  • Low range:
  • 0 to 1,000 ppm: ±100 ppm
  • 1,000 to 10,000 ppm: ±10% of reading
  • High range:
  • 0 to 1,000 ppm: ±100 ppm
  • 1,000 to 100,000 ppm: ±20% of reading
  • Resolution (LabQuest 2, LabQuest, LabQuest Mini, Go!Link, LabPro):
  • 0 to 10,000 ppm CO2: 3ppm
  • 0 to 100,000 ppm CO2: 30ppm
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