Technical data: HB-ISOLATOR-2W-1C
2-wire sensors like the pH sensor (HBPH-Mk2) are sensitive to grounding and in areas with electromagnetic interference you might need an isolator. The symptom is a surprisingly steady measurement and typically more than one sensor providing the same output.
This isolator PR3186A is loop powered and easy to install between the PLC/measuring device and the sensor. The isolator makes the sensor circuit independent of other ground signals.
This isolator is only suited for the two-wire sensors. You can read more about the isolator here.
