The LDSBus Salinity Sensor Adapter is designed to work with a Salinity probe to form a complete Salinity sensor. It uses electrical conductivity method for its measurement. This adapter has a BNC connector for attaching the Salinity probe.
A 2-point calibration method is used to calibrate the adapter and probe and allows measurements of salinity between 1 ppt and 120ppt with a precision of 1ppt.
This guide has details of different types of 3rd Party Compatible Probes which can be used.