The checklist for a good CO2 meter

What should you look for when buying a CO2 meter?

Since the introduction of new indoor air quality regulations, one thing is clear: CO2 plays a crucial role in healthy indoor environments. But how do you know if you’re choosing the right device? The authorities have published a practical guide with a clear checklist.

 

Below, we summarise the key points and show you how to ensure your device meets the requirements.

Why a CO2 meter matters

CO2 is a strong indicator of indoor air quality. The higher the CO2 concentration, the greater the likelihood of insufficient ventilation and the higher the risk of aerosol transmission.

With a reliable CO2 meter, you can:

  • quickly detect ventilation issues
  • take timely action (increase ventilation, adjust systems)
  • demonstrate compliance with regulations

The checklist: what should a good CO2 meter meet?

The government defines several clear criteria. These are the most important:

1. Accurate measurement technology

Always choose a device that directly measures CO2, such as one with an NDIR sensor.

 

Indirect measurements (« CO2 equivalent ») are not sufficiently reliable.

2. Calibration is essential

Every sensor ages and must be calibrated. Preferred options are:

  • automatic calibration (e.g. ABC logic or dual beam)
  • manual calibration in outdoor air

Regular external lab calibration is not recommended.

3. Sufficient measurement range

A reliable device measures at least up to 2000 ppm, preferably up to 5000 ppm.

4. Reliable accuracy

The measurement error should remain within a maximum of 10%.

5. Clear and actionable information

A good CO2 meter:

  • displays values clearly
  • logs data
  • provides visual or audible alerts when thresholds are exceeded

This allows you to act immediately when needed.

6. Practical usability

Also consider:

  • fixed or portable installation
  • visibility for users
  • ability to share data

Important: not every CO2 meter is suitable

Many devices on the market do not meet these criteria. Especially those using « CO2 equivalent » or lacking calibration options can lead to incorrect conclusions.

Good news: our CO2 meter meets this checklist

Our device:

  • uses an NDIR sensor (direct measurement)
  • offers reliable calibration options
  • provides an appropriate measurement range and accuracy
  • delivers clear and actionable measurement data

In short: you can be confident that your device complies with current regulations and provides reliable data.

Conclusion

A CO2 meter is not a gadget, but an essential tool for healthy indoor air. By following the official checklist, you make an informed choice and avoid unreliable measurements.

 

Not sure about your current device or looking for a reliable solution? We’re happy to help.

 

Any questions? Ask them here!

 

Source: Volksgezondheid Veiligheid van de Voedselketen Leefmilieu