Hey @R3plic8, take a look at this solution: Water filter quality and water softener status there’s a code block in there that contains the calibration values for both sensors. I calculated them against my fixed hardware 175psi pressure gauge. I don’t know if they’re all that accurate but they are ABSOLUTELY precise!
If you’re going to use the sensor(s) with any precision I recommend you calibrated it/them against something else. I performed my calibration (pedantically) by pressurizing them all together and letting out a little water between each measurement. Took data on every 5psi of change and gathered 20-30 measurements from each sensor then averaged those and used a quadratic fit from ESPHome. The results are more precise than I could have hoped for.
Let me know if you have any questions.
-Greg