LPS22HB calibration

cgeisz · ‎2016-02-11

Posted on February 11, 2016 at 23:52

I am looking to increase the absolute accuracy of the LPS22 pressure reading. It appears OPC can be set using registers 18h and 19h after soldering. Can this give my an absolute altitude reading (at a small defined temp range) of +-0.1hPa without zero calibrating? How do I reset the register using One Point Calibration?

Can the temperature be One Point Calibrated as well?

#lps22hb

Nickname3482_O · ‎2016-02-22

Posted on February 22, 2016 at 18:58

Hello,

yes, setting OPC after soldering through regs 18h and 19h would provide a +-0.1hPa accuracy.

This is often done at standard pressure (e.g. 1013.25hPa), no need to reset, but given that

you know in advance your application's operating pressure range you can choose a calibration pressure value falling within your range for better accuracy.

OPC is available for pressure, not temperature.

Best Regards,

Adalberto