ArduinoGeneral

Analog pH Meter Pro - RB-Dfr-639

userHead Account cancelled 2020-09-10 04:05:02 823 Views1 Replies
Hello.

I'm having some issues with this probe. I seem to need to offset the readings by +.28...

When I short out the BNC connector on a v1.1 of ADC, I get voltage 1.99 & PH Value 6.97 - 6.98.

Is my ADC interface okay still? or does it need to be replaced?

Thank you
2020-09-14 10:50:44 From your numerical point of view, it is normal. The ADC, power supply voltage, probe, transmitter, these will all cause errors, but the error has a range, if the error is large, it is unnormal. But your error is not big, in a reasonable range.
Please follow the wiki method to calibrate, set the intercept and slope to eliminate errors as much as possible.
userHeadPic Youyou