Sensor Accuracy and Technical Specifications

Parameter

Sensor Model

Range

Accuracy

Measurement Interval

CO2
(Carbon Dioxide) 

Sensirion SCD41

0 to 5000 ppm

± 75 ppm @ 400-1000 ppm

± 40 ppm + 5% m.v. @ 1’001 ppm – 2’000 ppm

1 minute

(Particulate Matter)

PM1

PM2.5

Sensirion SPS30

Sensor Specification Statement

0 to 1000 μg/m3

±[5 μg/m³ + 5 % m.v.] at 0 to 100 μg/m³

±10 % m.v. at 100 to 1000 μg/m³

PM2.5 accuracy verified by MCERTS at 0-75 μg/m3 ≤ 5 μg/m³

1 minute

PM4

PM10

±25 μg/m³ at 0 to 100 μg/m³

±25 % m.v. at 100 to 1000 μg/m³

TVOC Index
(Total Volatile Organic Compounds Index) 

Green Building Standard Compliance

Sensirion SGP41

Output Signal Range: 1 to 500 VOC Index Points

Device-to-Device Variation: 

<±15 VOC Index points or % m.v. (the larger)

1 minute

TVOC (ppm)*

Output Signal Range: 0 to 3 ppm*

NOx Index
(Total for nitric oxide (NO) and nitrogen dioxide (NO2))

Output Signal Range: 1 to 500 NOx Index Points

Device-to-Device Variation: 

<±50 NOx Index points or % m.v. (the larger)

CH2O
(HCHO, Formaldehyde)

Sensirion SFA30

0 to 1 ppm

±0.02 ppm or ±20% of the measured value, whichever is larger.

1 minute

Temperature

Sensirion STS35-DIS

-40 to +125C

± 0.5 C

1 minute

Relative Humidity

Sensirion SHTC3

0 to 100 %RH

± 2 %RH

1 minute

Atmospheric Pressure

Infinion DPS310

300 to 1200 hPa

± 1 hPa

1 minute

Light Intensity

AMS TCS34725

1 minute

Background Noise Level

Knowles SPH0641LM4H-1

30 - 100 dB

±2dB

1 minute