PH Probe port

[ishtak]

Hi Guys,

I noticed stray current in my sump and narrowed it down to the PH Probe. Suggestion from our local supplier here in SA was to clean the joint on the cable extension. This lead me to further testing discovering that the stray voltage is coming from the PH Probe port on the Head Unit. Has anyone else had this? Is this normal?

Justin

[Ademster]

I have the same problem. sadly no fix for it according to Roberto.

[rimai]

You can try tying down the - of the power supply (DC GND) to earth ground.
The metal shell of the BNC connector is the -
This will force them both to be on the same potential reference.
Let me know if that helps.