This sensor needs an externally generated air flow as there is no internal fan or something.
This is okay for us cases like (mentioned in the data sheet):
- Household air purifier
- Automobile air purifier
- Residential and commercial air conditioning
- HVAC system
The air flow needed could also be created by a heat source, i.e. electronic parts. But for this we would need to design a new case, that needs to be weatherproof and directs the airflow through the sensor.
Otherwise the sensor would measure the same air all the time.