BMP390 Relative,Absolute difference meaning

[kyusanglee]

I don't know the comparison between relative and absolute in BMP390.

What exactly does +-3Pa mean?

[FAE_CA1 · Accepted solution]

Hi,

Thanks for your inquiry.

BMP390 relative accuracy means that when pressure changes 10kPa, or 100hPa, or 843m near sea level in the range of (700hPa 1100hPa) pressure and (25C 40C) temperature, the typical accuracy of BMP390 will be +/-3Pa or +/-0.25m.

BMP390 absolute accuracy means that in the range of (300hPa 1100hPa) pressure and (0C 65C) temperature, every BMP390 will have typical accuracy of +/-50Pa compared to a reference pressure meter.

Thanks.