About VOC Tag¶
The VOC Tag is a gas sensor for measuring volatile organic compounds (VOC) concentration. This is useful for indoor air quality monitoring applications. This module uses a metal-oxide multi-pixel sensor SGP30 from Sensirion measuring total VOC level.
VOC (Volatile Organic Compounds) sensor is a great technology for indoor air quality measurement applications. Elevated VOC levels can have a negative impact on well being, comfort, and cognitive abilities. Typical VOC sources are cosmetics, detergents containing alcohols or aldehydes, carpets and flooring, paints, human and animal occupants. Measuring Total VOC (TVOC) level can helps to increase the efficiency of ventilation and air purification, and increases awareness of VOC sources and indoor air pollution.
Level |
TVOC (ppb) |
Hygienic Rating |
Recommendation |
Exposure Limit |
|---|---|---|---|---|
5 - Unhealty |
2200 - 5500 |
Situation not acceptable |
Use only if unavoidable
Intense ventilation necessary
|
Hours |
4 - Poor |
660 - 2200 |
Major objections |
Intensified ventilation
airing necessary, search for sources
|
< 1 month |
3 - Moderate |
220 - 660 |
Some objections |
Intensified ventilation
airing recommended, search for sources
|
< 12 months |
4 - Good |
65 - 220 |
No relevant objections |
Ventilation
airing recommended
|
No limit |
5 - Excellent |
0 - 65 |
No objections |
Target value
|
No limit |
Features¶
VOC multi-pixel gas sensor SGP30 (Sensirion)
Suitable for indoor air quality monitoring applications
Measurement range of TVOC: 0 to 60 000 ppb (part per billion)
The typical Measurement accuracy of ethanol signals: 15 % of reading
The typical Measurement accuracy of H₂ signals: 10 % of reading
Communication using I²C digital bus interface
Operating current: 48 mA (power supply using the DC adapter is recommended)
Operating voltage range: 1.9 V to 6.5 V (LDO equipped module)
Operating temperature range: -45 to 85 °C
Mechanical dimensions: 16 x 16 mm