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Wave Plus: sensor accuracy

Overview of Wave Plus sensor accuracy and how to read deviations.

Updated over 4 months ago

Sensors

  • Radon

  • Temperature

  • Humidity

  • CO2

  • VOCs

  • Air pressure


GENERAL SPECS of Wave Plus:

  • Operational Environment:
    39°F to 104°F (4° C to 40° C);
    below 85% humidity
    away from heavy dust and direct sunlight
    should not be used outdoors

  • Weight: 7.7oz (219 gr.) including batteries;

  • Dimensions: 4.7in (12cm) diameter x 1.4in (3.6 cm) height

  • Power: 2 AA batteries

  • Connectivity: Bluetooth & Airthings SmartLink


AIR QUALITY - SENSOR SPECIFICATIONS

Sensor sampling interval: 5 minutes

Sensor Accuracy

Temperature ± 1° C / ± 1.8° F

Humidity ± 3%

Pressure ± 0.15hPa


Settling time

VOC ~ 7 days

CO2 ~ 7 days


CO2 details

NDIR Sensor (Non-Dispersive Infra-Red)

Measurement range: 400–5000 ppm

Optimum Accuracy: ±30ppm ±3% within 15 – 35°C (60 - 95°F) and 0 – 80%RH can be reached after multiple settling cycles on locations with natural indoor CO2 fluctuations


VOC details

Metal Oxide MEMS

Measurement range: 0–10,000 ppb

RADON SENSOR SPECIFICATIONS

Radon sampling: Passive diffusion chamber

Detection method: Alpha spectrometry

Measurement range: 0 – 500 pCi/L

STANDARD DEVIATION

Accuracy/precision after 30 days of continuous measuring

  • Typical σ for 7-day average is:
    ~ ± 10% at 200 Bq/m3 or 5.4 pCi/L

  • Typical σ after two months:
    ~ ± 5% at 200 Bq/m3 or 5.4 pCi/L

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