No subject


Wed Nov 30 09:32:09 UTC 2022


without suffering from self-heating effects: You would have to mount it on its 
own PCB far from the other electronics connected to it (Breakout board?) and 
preferably power it with a low duty cycle.

As the data sheet says: The point of it having its own temperature sensor is 
mainly for compensating its pressure and humidity readings, and for that 
purpose self-heating is O.K. as the actual in-package temperature is relevant:
"The integrated temperature sensor has been optimized for lowest noise and 
highest resolution. Its output is used for temperature compensation of the 
pressure and humidity sensors and can also be used for /estimation/ of the 
ambient temperature." (emphasizing by me)

That said, there are even some NMIs using this sensor for logging the 
environmental conditions of their UTC labs onto ftp://ftp2.bipm.org/pub/tai/
data/2022/meteo/, namely 
Laboratório de Referência de Tempo e Espaço	in Sao Carlos, Brazil and
Institute of Metrology of Bosnia and Herzegovina in Sarajevo, Bosnia and 
Herzegovina	

Cheers,
	Jürgen




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