Q: Why is the formaldehyde reading inaccurate?
A: The air is not circulated during storage and transportation. In order to ensure the best
performance of the equipment, it needs to be ventilated outdoors for 1-2 hours before the
first use.
Note that gases such as alcohol, carbon monoxide, and hydrogen sulfide may interfere with
the sensor test. Stay away from alcohol, cigarette (including carbon monoxide), soot
(including acrolein), and fruit (including ethanol). If the detector is exposed to high
concentrations of air pollution, it will damage the sensor and make it unable to work
properly.
FAQ:
Q: Why is the PM2.5 reading constantly changing?
A: As PM2.5 concentration in the environment is changing all the time not only due to
environmental factors like changes in airflow, humidity, wind direction and etc. but also due
to common pollutant sources like smoking, cooking; exhaust emissions from vehicles,
smoke from burning coal/chimneys/furnaces and etc. All these may influence the PM2.5
concentrations and give dierences in the readings.
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