Electrical Conductivity Level Sensor

  • Level Switches
  • Conductivity level sensor for liquid fluid

Main application

Pump control of relay pump stations and manhole pump stations

Electrical Conductivity Level Sensor

Main feature

Insensitive to contamination

Relay unit with sequential logic circuit (RE9000) ignores affection from scum, suspended solids or other contamination.

Extremely rugged

Having no moving parts, the sensor offers long service life.

Easy-to-use relay unit

Mounting the sensor is easy with a cleaner and a mounting bracket.

Suitable for a wide range of applications

DIP switch on relay unit allows measurement of various liquids.
(Sensitivity: 1kΩ to 80kΩ)

Principle of Operation

The sensor has a pair of electrodes, and applies alternating current to them. When the liquid covers the electrodes, it forms a part of an electric circuit, causing current to flow. The sensor measures electric resistance of the liquid, and compares the measured value with a preset value to determine liquid presence. When liquid presence is detected, the sensor sends a signal to an amplifier to open or close relay contacts of relay units.

Sensor uses conductivity between the electrode and the ground to detect a level. For FRP or other plastic tanks, an earth electrode is required.


Instruction ManualAvailable only for the registered members

NOHKEN has been producing various non-standard specification or customized instruments apart from the introduced items on Web site.
On your request, we can review possible production of new range of non-std. or customized products as your inquiry.
Please feel free to contact us by phone or mail about it.

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