Electrical Conductivity Meter (EC Meter) Quiz
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Questions and Answers

What type of electrodes are commonly used in common laboratory conductivity meters?

  • Cubical electrodes
  • Cylindrical electrodes (correct)
  • Conical electrodes
  • Spherical electrodes
  • In common laboratory conductivity meters, what method is often used to apply an alternating current to the outer pair of electrodes?

  • Potentiometric method (correct)
  • Electrolytic method
  • Inductive method
  • Ohm's law method
  • What is the advantage of employing an inductive method in industrial conductivity probes?

  • Ease of calibration using electrolytes
  • Accuracy in determining conductivity
  • Fluid wets the electrical parts of the sensor
  • Fluid does not wet the electrical parts of the sensor (correct)
  • How are inductively-coupled coils utilized in the industrial conductivity probes?

    <p>To produce a magnetic field and supply known voltage</p> Signup and view all the answers

    What materials are four-electrode conductivity sensors made from?

    <p>Corrosion-resistant materials</p> Signup and view all the answers

    Study Notes

    Electrodes in Laboratory Conductivity Meters

    • Four-electrode sensors are commonly used in common laboratory conductivity meters.

    Applying Alternating Current in Laboratory Conductivity Meters

    • An alternating current is often applied to the outer pair of electrodes using a four-electrode method.

    Advantage of Inductive Method in Industrial Conductivity Probes

    • The advantage of employing an inductive method in industrial conductivity probes is that it eliminates polarization effects.

    Inductively-Coupled Coils in Industrial Conductivity Probes

    • Inductively-coupled coils are utilized in industrial conductivity probes to measure conductivity.

    Materials Used in Four-Electrode Conductivity Sensors

    • Four-electrode conductivity sensors are made from a variety of materials, including titanium, stainless steel, and platinum.

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    Description

    Test your knowledge about electrical conductivity meters and their applications in hydroponics, aquaculture, and freshwater systems. Learn about the principle behind common laboratory conductivity meters employing a potentiometric method and four electrodes.

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