Hi balloon-89412,
Thanks for your inquiry.
First of all BMP388 has been discontinued. Please see the attached PDN for more information. Please switch to BMP390, or the water-resistant version of BMP388 which is so called BMP384, or the new upcoming BMP580.
BMP388 has pressure operating range from 300hPa to 1250hPa with full accuracy. Your application with pressure of 48.82hPa is out of BMP388 operating range. So even BMP388 may not get damaged at such high altitude, its performance or accuracy is not guaranteed.
Thanks.
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