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How should I measure CO₂ in a room?

To place a room carbon dioxide sensor (CO₂ sensor) in a way that ensures accurate measurements, you should follow these guidelines:

  1. Place the sensor at the right height. 1–2 meters from the floor is an appropriate height, as this corresponds to the zone where people normally are and where the breathing air has the greatest impact.
  2. Avoid proximity to people. Do not place the sensor directly at workstations, beds, or other places where people sit or lie still for extended periods. The CO₂ concentration may be higher in direct proximity to individuals exhaling carbon dioxide.
  3. Avoid windows and doors. Avoid placement near windows, doors, or ventilation openings where airflows can dilute the carbon dioxide level and give inaccurately low values.
  4. Avoid heat sources. Do not place the sensor near heat sources (radiators, stoves, lamps), as heat can create air currents that affect the measurement.
  5. Good air circulation. Place the sensor in a location with good air circulation so that it measures average CO₂ levels in the room, but not in direct drafts.
  6. Central placement in the room. If possible, place the sensor in the center of the room, in a location that represents the general air quality of the room.
  7. Avoid obstacles. Do not place the sensor behind furniture, curtains, or other obstacles that may block airflow.