# What is the working principle of conductivity meter?

What is the working principle of conductivity meter?

## What is the working principle of conductivity meter?

The principle by which instruments measure conductivity is simple—two plates are placed in the sample, a potential is applied across the plates (normally a sine wave voltage), and the current that passes through the solution is measured….Conductivity.

Cell Constant(K) Optimum Conductivity Range (µS/cm)
10.0 1000 to 200,000

### How does an electrical conductivity sensor work?

When Contacting Sensors are used, the conductivity is measured by applying an alternating electrical current to the sensor electrodes (that together make up the cell constant) immersed in a solution and measuring the resulting voltage. The solution acts as the electrical conductor between the sensor electrodes.

#### What is conductivity method?

Conductivity can be measured either by the 2-AC bipolar method or electromagnetic induction method. The bipolar method measures the current that passes through the solution between a pair of electrodes. The electromagnetic induction method measures the induction current generated by two coils immersed in the solution.

Which electrode is used in conductivity meter?

The two electrode cell is the most commonly used conductivity cell Glass cells have electrodes made of platinum….Conductivity Cells.

Water uS/cm
Surface water 30 – 7000
Waste water 700 – 7000
Brackish water 1000 – 8000
Ocean water 40000 – 55000

What is SI unit of conductivity?

Conductivity (or specific conductance) of an electrolyte solution is a measure of its ability to conduct electricity. The SI unit of conductivity is Siemens per meter (S/m).

## Which electrode is used in EC Meter?

Common laboratory conductivity meters employ a potentiometric method and four electrodes. Often, the electrodes are cylindrical and arranged concentrically. The electrodes are usually made of platinum metal. An alternating current is applied to the outer pair of the electrodes.

### What are types of conductivity?

Types of Conductivity

• Thermal Conductivity. Thermal conductivity measures the ability of a material to accommodate the movement of thermal energy (heat), measured in Watts per meter Kelvin (W/ mK).
• Electrical Conductivity.
• Ionic Conductivity.
• Hydraulic Conductivity.

#### What are the 2 types of conductivity?

What Are Different Types of Conductivity?

• Thermal conductivity – thermal conductivity is a material’s ability to conduct heat or thermal energy.
• Electrical conductivity – metallic and polarised materials are good electrical conductors.