This could be due to a bad pH sensor. The sensor should produce ~0 mV in a solution with a pH of 7 and a slope of ~59.16 mV/pH on pH levels above that. When you do a calibration and the offset is out of the +/- 60 mV limits it will throw an error. You can adjust the limits on a Rosemount 1056, but you should be cautious, because the sensor could actually be bad.
Good video. Didn't realize Calibration fluid was a thing
Thanks! I’m glad you enjoyed it!
@@AutomationCliff I see you're from Red Deer. I'll have to check out your other videos. Subscribed
Can you please help me to know.. what is the reason of offset error in ph sensor calibration... And how to fix it
This could be due to a bad pH sensor. The sensor should produce ~0 mV in a solution with a pH of 7 and a slope of ~59.16 mV/pH on pH levels above that. When you do a calibration and the offset is out of the +/- 60 mV limits it will throw an error. You can adjust the limits on a Rosemount 1056, but you should be cautious, because the sensor could actually be bad.
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