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xzhon.2338
Visitor II
December 9, 2019
Question

hts221

When the hts221 passes the test, the humidity of the constant temperature and humidity box is adjusted to above 70% (the temperature of the constant temperature and humidity box is not set to a specific degree), which is very inaccurate.

In particular, when the constant temperature and humidity box is adjusted from 99% to 50%, the humidity value is stabilized at 50%, 4 hours or even 8 hours, the value read by hts221 is still 99%.

Tested four consecutive hts221, this is the case.

And my hts221 code, use the following code:

https://github.com/STMicroelectronics/STMems_Standard_C_drivers/tree/master/hts221_STdC

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    1 reply

    Eleon BORLINI
    ST Employee
    December 13, 2019

    Hi @xzhon.2338​ , but does the humidity vary during your tests or stays fixed at 99%? Can you please share the raw data of your measurements? Regards