• Can I calibrate the temperature and humidity sensor for M2000 2nd generation?

    0 comments /
    The displayed reading is higher than the normal temperature because in addition to the ambient temperature, many internal sensors and electronic components also generate heat. Currently we are not able to have a temp offset calibration. The temperature sensor was not broken, just the accuracy (±2℃) not so high comparing to some professional thermometer. The temperature sensor used in M2000 2nd generation is Sensirion SHT31, which is enough for normal daily use.

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  • Must the ventilation/calibration done outdoors?

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     It is not a must put the device outdoors, you can just put it in a ventilated place such as indoors near the windows or near the air purifier, and keep it turned off. As the device has been stored in a sealed package for months, the ventilation mainly purposes at removing the stale air inside the device which may affect the accuracy of the sensors.

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  • Why the TVOC reading gets higher at night?

    1 comment /
     There are many factors that affect TVOC readings. When we go to sleep at night, we usually close the doors and windows and stop walking around. This reduces the circulation of air and makes the readings higher than during the day. In addition, the sweat produced during sleep, and the exhaled gas also contains a variety of VOCs, which also increases the concentration of TVOV. Even the TVOCs that are distributed in furniture and decoration materials are more obvious at...

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  • Why the readings are inaccurate?

    2 comments /
    The air does not circulate during storage and transportation, to achieve the best performance of the device, it needs to be placed in the outdoor ventilation for at least 6 hours before the first use. Meanwhile, each sensor has individual differences, just like everyone is with different alcohol metabolic abilities, so a small number of sensors may require longer ventilation. In this situation, to extend the ventilation time will be advised. Please be noted that gases such as alcohol, carbon...

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  • What is the principle of particle sensors?

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    Laser particle sensor can obtain the number and quality of suspended particles in the air per unit volume, which is called particulate matter concentration. Meanwhile, it can output as a digital interface. Based on the principle of laser scattering, when the air outside uniformly passes through the specially designed air duct, the laser light is scattered on the suspended particles in the air, and the information processing circuit converts the light intensity signal of the scattered light into a voltage...

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