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Calibrating the Redox probe shows ADC = 000 with Null Plug and 220mv Cal Fluid
Hi,
Need some help here with the Redox PRobe calibration on the Profilux 3Ex.
I have tried to calibrate the Redox Probe, when I insert the null plug, it shows 000 after a while.
thereafter, the null plug was replace by the ORP probe dip in the 220 mv Calibration fluid. Again, it shows ADC = 000.
Throughout the calibration, the ADC reading did not fluctuates. It always stay at '000'.
Once the Calibration is complete, the ORP reading always show -999 mv.
Just wonder what went wrong with this. I have done the same with a new Redox probe, exactly the same observation as above.
Any help is appreciated. Thanks in advance.
Thanks!
rgds
KwaiSeng
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Are you shure you have used the Redox input and not the one for conductivity? The conductivity input looks the same and the marking "Redox " is between the two BNC sockets.
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Hi Gunther,
Thanks for responding. Yes, I have validated that the probe is indeed connected to the Redox input port.
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