Wiring and Connecting pH and ORP Probes

For both pH and ORP probes, the wire hosts both a “core” wire and shield wire. The core wire typically is encased in a semi-clear plastic coating and the shield wire could be something formed by twisting the shielding into a “wire” and other times, the shield wire looks just like a standard cable.

The wire core should be connected to the “top” and the shield to the “bottom” of each chemistry probe connector.  There have been several different models/brands used, and each looks slightly different.

Depending on where you get your cables from, each could look different. Please review the following to match the cable you have with how each wire should be placed into the probe connector.

Updated on September 22, 2023

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