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HDC2022: Measuring humidity at negative temperatures

Leonardo Prates
Prodigy 80 points
Part Number: HDC2022

Tool/software:

Could the HDC2022 be used to measure humidity at negative temperatures? Which is humidity range expected at the situation? Could the sensor return negative humidity? Does Texas have humidity errors percentage at negative temps?

Best regards,

Leonardo

  • 0
    TI__Expert 8155 points

    Leonardo,

    HDC2022 will read RH at negative temperatures, but the RH accuracy below 0C is not characterized or guaranteed. The sensor will not report negative humidity, that is not possible. The sensor will report a range from 0% to 100% RH. It is possible to have a relative humidity level at negative temps if there is still moisture in the air, but we do not have min/max or typical data for humidity below 0C.

    Regards

    -Alex Thompson