Conductivity Transmitters & Cells

It measures how much dissolved salt, acid or alkali is in water, reported in µS/cm or mS/cm, and shows or logs that value with alarms or a dosing output. Plants use it to control water treatment, check rinse water purity, dose chemicals and monitor effluent discharge.

It depends on range and liquid. The S411 suits general water up to 50,000 µS/cm, the S411 TEF C's PTFE body resists aggressive chemicals, and the S411 D12 covers higher ranges up to 100 or 200 mS with a built-in Pt100. Send us your range, temperature and liquid and we'll recommend one.

It sets how the raw electrode reading is scaled to a conductivity value, and therefore which range the cell measures well. A low K, such as K=1 on the S411, suits general water; a higher K suits salty or concentrated solutions where the raw signal would otherwise be too strong.

Yes. The Chemitec Series 46 handles one or two parameters on the same display, including conductivity paired with pH/ORP, dissolved oxygen, turbidity or chlorine, which suits a combined water-quality monitoring point.

An inductive sensor, such as the Seli SLI-04, measures through a coil rather than exposed electrodes, so it resists fouling and scaling in dirty or oily liquids. It stores 4 calibration curves, useful where the process runs several different products through the same line.

Conductivity rises with temperature, so an uncompensated reading drifts as the process warms or cools. The S411 U cell is temperature-compensated for use up to 120 °C, so the transmitter corrects the reading back to a reference temperature automatically.