Conductivity Measurement

Depending on the product, Supmea solutions can measure conductivity, TDS, resistivity, salinity, temperature and, on selected inductive sensors, concentration. Check the selected product specifications before configuration.

The range depends on the sensor technology and cell constant. Across the current Supmea product portfolio, selected sensors cover applications from approximately 0.01 μS/cm up to 2000 mS/cm. No single sensor should be assumed to cover the entire portfolio range.

Low-conductivity water normally requires a contact sensor with an appropriate low cell constant. SUP-TDS7001 and selected SUP-TDS6012 configurations are suitable starting points for low-conductivity applications. Final selection should be based on the actual conductivity range and process conditions.

Liquid conductivity changes with temperature. Temperature compensation allows the meter to compensate the measured conductivity according to the configured reference and compensation method, helping make process readings more comparable.

No. The sensor principle, cell constant, temperature element, signal type, connector and meter input must be compatible. Always confirm compatibility using the latest sensor and meter datasheets.

Depending on the model, Supmea conductivity meters support 4–20 mA, relay outputs, RS485 and Modbus-RTU. Selected digital sensors provide RS485/Modbus-RTU directly from the sensor.