Hello, The BMP280 and other pressure sensor datasheets list a relative accuracy specification that is tighter than absolute accuracy. In some industries (metrology for example), relative accuracy is the accuracy of the instrument compared to the calibration standard while absolute accuracy takes the error of the calibration standard into account, as well. Is that what is meant by the BMP280 relative accuracy? Or, alternatively, does the relative accuracy instead mean the accuracy of a measurement relative to a prior measurement from the same device? E.g., if I measure 900hPA and then measure 910hPA, does the relative accuracy mean that the second measurement is actually 910-900=10hPa+/-0.12hPa higher than the former? If so, how does this compound as pressure is increased and decreased? If I applied a 900, 910, 900, 910 hPa square wave, would the sensor values be repeatable? Thanks in advance, Kevin
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