Copyright 2021 Dial Instruments Pte Ltd
Electrical Conductivity Level Sensor MT10
ECLS

Electrical Conductivity Level Sensor MT10

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Product Description

Applications

Pump control of relay pump stations and manhole pump stations
 

Features

  • 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 a 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

Principle of Operation
 
  • The electrode is suspended from the detector in the pipe using coaxial cable. The cable end is wound on the spool and then connected to an external device through the slip ring.
  • When inductance and the detected capacitance tune to the frequency of the voltage applied from the controller, the parallel resonance circuit resonates, causing the highest high frequency voltage to be applied to the electrode.
  • The high frequency voltage on the measurement electrode varies with the measured capacitance, and so does the output voltage.
  • The reference voltage is adjusted such that the centre of the electrode becomes the zero point, and the bridge circuit is made to output zero at this point.
  • When a voltage (+E or ?E) is applied to the electrode due to level change, the servo motor rotates normally or reversely so that the bridge is always balanced, causing the electrode to rise or fall with the material surface.
Copyright 2021 Dial Instruments Pte Ltd