Journal of Sensors / 2018 / Article / Tab 3

Research Article

Design and Development of a Low-Cost, Portable Monitoring Device for Indoor Environment Quality

Table 3

IEQ index with parameters.

IEQ parameterAmbient levelsHealth risk levels

Humidity40–70%70 > H > 40%
Temperature16–24°C24 > T > 16°C
PM2.5<35 μg/m3>35 μg/m3
PM10<150 μg/m3>150 μg/m3
Total VOC50–325 ppb>500 ppb
CO2350–1000 ppm>5000 ppm
CO0–10 ppm>10 ppm
Illuminance200–500 lux<100 lux
Sound levels0–70 dB>80 dB