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This is my first post. I've tried the search function and read the posting guidelines, so I hope this is acceptable.
I could use some guidance because the manufacturer's user manual for the Rosemount 1056 offers no troubleshooting help, and I would like to correct this problem without simply replacing the entire 1056.
I checked the pH probe (Rosemount 3900VP-10-02) with buffer solutions (4.01, 7.00, and 10.01) and got readings of 6.80 in the 4.01, 5.60 in the 7.00, and 7.80 in the 10.01. Attempted to calibrate probe using the buffers and was met with the offset error.
Replaced the probe with a brand new one, attempted to calibrate and received similar results to above.
Took the original pH probe and connected it to a known functioning pH analyzer and got an acceptable indication in the process water.
The troubleshooting I've done so far seems to indicate there is a problem with the analyzer, not the probe. If anyone has experienced a similar problem before, I would appreciate some input about additional troubleshooting and possible permanent fixes. Additionally, if anyone has input for a more effective troubleshooting process for a problematic pH probe, I'd be interested in hearing about that as well.
I could use some guidance because the manufacturer's user manual for the Rosemount 1056 offers no troubleshooting help, and I would like to correct this problem without simply replacing the entire 1056.
I checked the pH probe (Rosemount 3900VP-10-02) with buffer solutions (4.01, 7.00, and 10.01) and got readings of 6.80 in the 4.01, 5.60 in the 7.00, and 7.80 in the 10.01. Attempted to calibrate probe using the buffers and was met with the offset error.
Replaced the probe with a brand new one, attempted to calibrate and received similar results to above.
Took the original pH probe and connected it to a known functioning pH analyzer and got an acceptable indication in the process water.
The troubleshooting I've done so far seems to indicate there is a problem with the analyzer, not the probe. If anyone has experienced a similar problem before, I would appreciate some input about additional troubleshooting and possible permanent fixes. Additionally, if anyone has input for a more effective troubleshooting process for a problematic pH probe, I'd be interested in hearing about that as well.