Conductivity (EC)
What is Conductivity?
Conductivity is an expression of the ability of a solution to conduct electric current. It is expressed as a microsiemen (micro-Siemens per centimeter or µS/cm) or in higher conductivity levels as a millisiemen. It is also the reciprocal of resistivity.
Some industries such as water treatment have adopted a measurement expressed as TDS (Total Dissolved Solids). TDS is approximated with conductivity using a multiple factor and is expressed in parts per million (ppm).

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Custom Conductivity / TDS Sensor Design & Manufacturing
Designing a new water treatment product? We can help. Sensorex specializes in the design and manufacture of custom water analysis sensors for our OEM partners. Collaborate with our expert team of engineers and chemists to design a conductivity sensor that meets the needs of your system. Body size and shape, materials of construction, measurement range, cable length, connector type and other features can be adjusted to fit your application requirements.
Conductivity
Our extensive line of conductivity and TDS products provide options for almost any application.
Popular ProductsSensorex Conductivity Best Sellers
TDS / Conductivity Calibration Standards
TDS/Conductivity instruments and sensors must be calibrated together. For a single-point calibration, select the one solution that approximates the expected…
CS200 – Contacting Conductivity Sensor, 12 mm Platinum
The CS200 12 mm Platinum Contacting Sensor is ideally suited for laboratory or light industrial process applications. It can be…
CS150 – Graphite Contacting Conductivity Sensor, 12 mm
Used for Laboratory and Light Industrial Applications: Cells are made from graphite to provide good performance for the value. Choose…
CS650 – Conductivity Sensor, Stainless Steel
The Sensorex CS650 Stainless Steel Conductivity Sensor is a general purpose sensor to be used in a variety of benign…
EM802-EC – Smart Conductivity Modules (4-20mA or MODBUS/RS485) for S8000 Series
The EM802-EC is our most cost-effective solution for connecting our S8000 series Contacting Conductivity sensors to a PLC or SCADA…
CX10 – Conductivity Transmitter, 4-20mA
The CX10 is a convenient and cost effective solution for monitoring conductivity or resistivity of water. Save space in your…
ITCS3020 – Smart General Purpose Noryl Toroidal Conductivity Sensor
Sensorex's ITCS3020 Smart General Purpose Noryl Toroidal Conductivity Sensor communicates directly via 4-20mA or Modbus output. Configuration and calibration done…
TCS3020 – General Purpose Noryl Toroidal Conductivity Sensor
Sensorex's TCS3020 General Purpose Noryl Toroidal Conductivity Sensor is designed to be resistant to corrosion, coating, and fouling. Sensor measures…
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In addition to Conductivity sensors we have a full range of water quality sensors.
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