Keep my session open?
Ending In 
The session is expired
Your session has expired. For your security, we have logged you out.
Would you like to log in again?

Vernier® Carbon Dioxide Gas Sensor

Measures carbon dioxide in two ranges.

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



Item # Description Unit Availability Price Quantity
470039-278 CO2 Gas Sensor
Each Retrieving


Accuracy 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
Range Low range: 0 to 10,000 ppm CO2;
High range: 0 to 100,000 ppm CO2
Resolution 0 to 10,000 ppm CO2: 3 ppm;
0 to 100,000 ppm CO2: 30 ppm
Response Time 95% of full-scale reading in 120 seconds
Operating Temperature Range 25°C (±5°C)
Warm-Up Time 90 seconds
Measurement Range Low Range: 0 to 10,000 ppm CO₂
High Range: 0 to 100,000 ppm CO₂
Output Voltage Range 0-4.0 V
Storage Temperature Range –40 to 65°C
Operating Humidity 5–95% (non-condensing)
Pressure Compensation 0.19% of reading/mm of Hg from standard pressure


Need help?

  • Whatever you have to say, positive or negative, is important to us.
  • Providing feedback takes only seconds.
  • Your feedback will be made available to the public on the web. will publish your name as user.
You can use this name, or edit and save a nickname.
We recommend authors use their first and last initial.

Please confirm your profession

Example: Education

Please confirm your role

Example: Teacher

Please confirm your location

Example: New York, NY


Total Ratings: 0
Avg. Ratings: 0.0 out of 5

Sort all by:

Review & Compare Alternatives
We found alternative products that can save you up to  per item-unit.  To compare product details, select up to 3 alternatives below and click Compare Selected. To add items to your basket, enter a quantity and click Add to Basket.

Original Product:

Description Catalog Number Availability Unit Your Price Price Per Qty