PASPORT Carbon Dioxide Gas Sensor - PS-2110

Move to Wireless!

Recommended Alternative — The Wireless CO2 Sensor can perform most of the functions of the PASPORT Carbon Dioxide Sensor and more, all at a significantly lower price. Best of all, it connects directly* to your computers, tablets, smartphones and Chromebooks without the need for an interface and with no cables to get in the way.

*Devices without native Bluetooth® Smart connectivity will require a low cost USB adapter - see the product pages for details.



Our Carbon Dioxide Gas Sensor has the broad dynamic range to measure a wide variety of CO2 concentrations, from the germination of peas (10K ppm) to the human breath (50K ppm) to automotive exhaust (80K ppm), and more. Plus, it's easy. Instantly calibrate our Carbon Dioxide Gas Sensor with just one button – no software commands required.

Typical Applications

  • Measure CO2 uptake during photosynthesis in a terrarium
  • Compare indoor vs. outdoor CO2 levels
  • Study cellular respiration of yeast
  • Conduct chemical reaction studies
  • Conduct qualitative comparisons of carbon dioxide concentrations up to 300,000 ppm.

Special Features

  • Digital signal processing means quieter, more stable data
  • Larger vent holes allow faster response time


  • Sensor
  • 250-ml sample bottle
  • Stopper
  • Extension Cable
  • Specifications

    • 0 to 300,000 ppm
    • Operating temperature: +20 °C to +30 °C
    • 1 ppm
    • 0 ppm to 10,000 ppm: 100 ppm or 10% of value, whichever is greater
    • 10,000 ppm to 50,000 ppm: 20% of value
    • Over 50,000 ppm: qualitative only.
    • ±50 ppm or 5 % of value, whichever is greater
    Humidity Range
    • 5 % to 95 % relative humidity, non-condensing
    Operating Temperature
    • +20 °C to +30 °C


    Buying Guide

    PASPORT Temperature Sensor
    Recommended Probeware
    PASPORT Temperature Sensor   PS-2125
    250 mL Sample Bottles (4-pack)
    Replacement Parts
    250 mL Sample Bottles (4-pack)   SE-6938

    Interface Required

    To use this product you need a PASCO interface. 

    New to probeware or have questions about  sensors or interfaces? Contact Teacher and Technical Support.  We're here to help!

    Software Required

    SPARKvue software or PASCO Capstone software may be used. PASCO Capstone is available for Mac and Windows. SPARKvue is available for Mac, Windows, iOS, Android and Chromebooks.

    Learn more about Bluetooth Compatibility.