Do you own two or more monitors and have noticed deviation with the CO2 or VOC measurements? Not to worry, below are some steps to guide you if you wish to make this comparison :

  • The accuracy of the CO2 monitor is ±30ppm ±3% within 15 – 35°C / 60 - 95°F and 0 – 80%RH after the initial calibration time.

  • We cannot offer an exact accuracy specification for the VOC sensor because the sensor provides TVOC (total VOC) and not an exact measurement of a particular chemical. Most consumer-grade VOC sensors behave this way and the sensor output is scaled to give the most correct reading for one common mix of compounds.

Ready to start comparing two or more monitors? Please follow the steps below.

  1. Be sure to start a new measurement segment at the same time with the two monitors side by side. (For steps to start a new measurement segment, click here.

  2. Make sure to let the monitors run side by side for 7-10 days. During this time, the sensors are still calibrating so it is normal to see a deviation between the two.

  3. Be sure to place them in a generally well-ventilated room. This will help the sensors establish a baseline for 'clean air'.

Please note: After following the steps above, you should see the CO2 and VOC sensors begin to give similar measurements but a small degree of deviation is to be expected.

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