**Please Note: The CO2Meter offices will be closed in observance of the US Thanksgiving holiday beginning at 5:00 pm et. Wednesday, November 24. All operations will reopen Monday, November 29 at 8:30 am et. Orders placed after noon et. November 24 will be fulfilled on November 29. Happy Holiday!**

pSense High Accuracy (±30 ppm) Portable CO2 Meter

pSense High Accuracy (±30 ppm) Portable CO2 Meter
Regular price $329.00

POs or wholesale quantity discounts click here

With up to 24 hours battery life and easy to use with gloves on, the High Accuracy portable carbon dioxide meter works perfectly for precision monitoring of CO2, temperature, and relative humidity in any location and it works great as a personal safety alarm unit in hazardous environments.

  • CO2, Temperature, Humidity
  • Includes International Power Supply
  • Save Money - Calibrate Outdoors
  • High Accuracy

The large LCD readout gives a quick overview of the current carbon dioxide level, temperature, and relative humidity, and the 80 dB audible alarm calls for prompt attention when the short-term exposure safety limit is exceeded.

This air quality CO2 meter data logger calculates statistical weighted averages of TWA (8-hour time-weighted average) and STEL(15-minute short term exposure limit).


This device will NOT meet requirements for CO2 safety monitoring which requires a Fixed/Wall mounted, hard-wired alarm per the NBIC, NFPA, or IFC regulations. Refer to our CO2 Safety Products page for devices that meet your needs.

Call us at (877) 678-4259 toll-free or email us to speak with our technical sales team about purchasing the correct device.

Optional Data Logger Kit

The optional data logger kit for Windows PC is perfect for students, scientists, researchers, or anyone who needs to record CO2 levels over time. Each reading (user-selected frequency) includes a date/time stamp for accurate analysis. Use the kit to record CO2 and temperature levels for an hour, a day, or even a month. Data can be viewed on-screen or saved to an ASCII text data file that easily imports into a spreadsheet.


  • High CO2 measurement accuracy
  • Sensing Method: NDIR (Non-Dispersive Infrared) technology
  • Big LCD display with high resolution displays: CO2, temperature and relative humidity
  • CO2 Measurement Range: 0~9999 ppm (5001~9999 ppm out of scale range)
  • CO2 Accuracy: ±30 ppm ±3% of reading (0~5000 ppm)
  • Battery Life: approx. 24 hours of continuous reading
  • 80 dB Alarm


  • 120/220VAC adapter (power for long-term operation)
  • International Wall adapter kit
  • ABS Plastic Case
  • 4 AA Batteries
  • Manual


    • 1 year - See CO2Meter Terms and Conditions. 

    Optional Accessories

    Optional Data Logger Kit

    • DB9 Serial Cable, USB adapter
    • Software CD
    • Requires PC running Win2K/XP/Vista/7/8/8.1 with USB Port
    • Must be plugged into PC to log data
    • Data Sheets

    • Manuals

    • Technical Documents

    • Videos

    • Additional Resources

    Customer Reviews

    Based on 6 reviews

    super quick delivery, very reliable product

    My first co2 meter

    I have used precision temperature probes in my work for a while and noted that “precision” is influenced by a variety of factors such as movement and or placement of probe. I have not used a co2 meter before but noted a similar pattern. Moving the probe even a few feet influenced the readings. Even standing near the probe and breathing influenced the numbers. As far as accuracy I can’t tell as I don’t have a baseline from which to evaluate. But given its sensitivity,in practical use, being similar to other precision instruments I have used I imagine it is good. It has the hallmarks of a precision instrument. I gave 4 stars instead of 5 because I still have lots to learn about this new tool and don’t want to shill in ignorance.

    Portable Co2 unit

    Very basic unit. Easy to use. Takes time to initialize each time it gets turned on. I like the timed off feature which automatically turns the unit off after a preset time.

    CO2 sensor for winery

    Very easy to use and sturdy, works great for us

    Easy to Use

    I am very sensitive to elevated CO2 levels and bought this to evaluate my home and other spaces. Turned it on and it told me what I wanted to know with no learning curve! Awesome tool!

    "Easy to install, easy to set up, and easy calibration - just what I was looking for."

    - Phillip Farrar
    Water Plant Superintendent

    Read More Reviews...