Nice job. When you view the calibration page you get the raw pH value, the calibration is ignored. When you close calibration and enable pH you see a calibrated value, that's why they are different.Ok. Thank you @robsworld78. I was able to get the pH probe activated. I do have yet ANOTHER question. I calibrated it and on the calibration page it is reading it at 7.99 but on the graph page it’s only reading 6.66. I’ve tried recalibration and of course saving and rebooting but to no avail
If you delete the pH from the pH tab the calibration data will be erased.
Do that and add it back, then you should get the same reading on graph and calibration screen until you do a calibration.
If you do two step calibration start with 7.0 buffer, once value stabilizes rinse the probe and place into buffer two. Don't close the calibration screen until you set both points. If you do point one, close the calibration, open and go directly to point two you will get unexpected results.