The LDSBus ORP (Oxidation Reduction Potential) Sensor Adapter is designed to work with a matching ORP probe to form a complete ORP sensor. This adapter has a BNC connector for attaching the ORP probe.
A 1-point calibration method is used to calibrate the adapter and probe, and ORP measurements can be undertaken with a resolution of 1 mV between -2000mV and +2000mV.
This guide has details of different types of 3rd Party Compatible Probes which can be used.