Another bread n butter post for enviro-sci, but we couldn’t release that post on calibrating sensors without covering the closely related process of sensor normalization. And the two are not exclusive: you can normalize after calibration to bring a set of sensors into better alignment than even your reference sensors. Unfortunately, a good reference for pressure is hard to find, or very expensive, so you are usually stuck using Airport climate stations which can be many miles away.

https://thecavepearlproject.org/2024/05/01/how-to-normalize-a-set-of-pressure-sensors/