Home Forum Hardware Model without fan/noise

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  • #6497
    pfisi
    Participant

    Hi, is there a model planned without a fan or a quiet fan. The current A3 creates a headache in my home office after a while. Thank you.

    #6506
    Radu
    Keymaster

    I understand that, as I sometimes have a few of them running in parallel. The “Smoggie” has a smaller fan, see datasheet attached. For the A3 it might be possible to increase the sending interval and use powersave. With this setup, the unit will do the measurements, then go to sleep (including the fan) for the amount of time you define. Would this work?

    #29125
    gopher
    Participant

    Does the same fan noise problem affect other models (especially INDUSTRIAL)?

    What is fan used for? Is it for generating airflow for PM detector? Or any other purpose? Can it be turned of/disconnected from power when monitor is working without case? (I have A3 model)

    I’m generally thinking about replacing my A3 with 2 Industrials. But this problem is stopping me from doing that, as I need to use monitors indoors.

    #29223
    Radu
    Keymaster

    The FAN has a dual purpose:
    – it pushes air through a narrow path inside the PM sensor
    – it pushes air across all sensitive elements

    While an open case (A3 Stevenson shield) can take advantage of the natural air convection, wind, or general air movement, the PM sensor will still need a controlled airflow.

    So to make this work, the only option to lower noise is to reduce its frequency, using the sleep mode option.

    On the other hand, the noise itself is ~35dB near the unit, quite low. If you have the A3 you can evaluate that yourself.

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