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What Is A Conductivity Sensor, Application Areas Of Conductivity Sensors

What Is A Conductivity Sensor, Application Areas Of Conductivity Sensors

September 27 , 2023 0

A conductivity sensor is a sensor used to measure the conductivity in a liquid or gas, which measures the concentration of ions in the liquid or gas and thus detects the concentration of certain substances in the liquid or gas. Conductivity sensors can be used to measure the conductivity of water, as well as the concentration of different ions in water, which is important for environmental monitoring and water quality testing. In addition, conductivity sensors can also be used in digital mining instruments to collect data for better detection and monitoring of water quality.Conductivity sensor technology is a very important field of engineering research, used to measure the conductivity of the liquid, is widely used in human production and life, and has become an indispensable detection and monitoring device in the development of industrial production and technology in electric power, chemical industry, environmental protection, food, semiconductor industry, marine research and development. Conductivity sensors are mainly used for measuring and detecting the properties of water for industrial production, water for human life, seawater, and electrolyte in batteries.

Point-To-Sensor Concepts

Conductivity sensors can be divided into electrode-type conductivity sensors, inductive conductivity sensors and ultrasonic conductivity sensors according to the different measurement principles and methods. Electrode-type conductivity sensor according to the electrolytic conductivity principle using resistance measurement method. Conductivity measurement, the conductivity measurement electrode in the measurement process as a complex electrochemical system; inductive conductivity sensors based on the principle of electromagnetic induction to achieve the measurement of liquid conductivity; ultrasonic conductivity sensors based on ultrasonic changes in the liquid conductivity measurement.

Conductivity Sensor Uses

1, conductivity sensor in use to let the object to be measured and the sensor full contact
2, conductivity electrodes and sensors connected to the notch of the BNC interface and the sensor interface protruding end of the alignment and tighten can be
3, before and after use, pay attention to the use of distilled water to rinse the two poles, and use filter paper to absorb dry

Conductivity Sensor Features.

1、Accurate testing.
2、Electrode constant is strictly calibrated
3、Resistant to high temperature and high pressure
4、Special production materials, not easy to be stained
5、Integrated structure, sturdy and durable.
6、Multiple installation methods, immersion type, pipeline type, circulation tank type.
7、High temperature steam sterilisation (140C)

Conductivity Sensor Working Principle

After being subjected to an external force, the strain gauges pasted on the elastomer subsequently produce deformation caused by resistance changes, resistance changes make the composition of the Whisden bridge out of balance to output a linearly proportional to the external force changes in the amount of electrical signals.

Conductivity - a physical concept, also known as electrical conductivity. In a medium, the product of conductivity and electric field strength E is equal to the conduction current density J. For isotropic media, conductivity is a scalar; for anisotropic media, conductivity is a tensor. In ecology, conductivity is the ability of a solution to conduct an electric current expressed as a number. The unit is expressed in Siemens per metre (S/m).

Electrical conductivity (conductivity) is a parameter used to describe the ease of charge flow in a substance. In the formula, conductivity is represented by the Greek letter κ. The standard unit of conductivity σ is Siemens per metre (abbreviated as S/m), which is the reciprocal of resistivity ρ, i.e. σ = 1/ρ.

When a current of 1 ampere (1A) passes through the cross-section of an object and a voltage of 1 volt (1 V) is present, the conductance of the object is 1 S. Siemens is effectively equivalent to 1 ampere/volt. If σ is the conductance (in Siemens), I is the current (in amperes), and E is the voltage (in volts), then: σ = I/E

Normally, the current in such a DC circuit is proportional to the conductance when the voltage is held constant. If the conductance is doubled, the current is doubled; if the conductance is reduced to 1/10th of its initial value, the current becomes 1/10th of what it was.This rule also applies to many low-frequency alternating current systems, such as household circuits. In some alternating current circuits, especially in high-frequency circuits, the situation becomes very complicated because the components in these systems store and release energy.

Conductance and resistance are also related, if R is the resistance of a component and device (in ohm Ω) and the conductance is G (in Siemens S), then: G = 1/R

Role of Conductivity Sensors

A conductivity sensor is a sensor that is used to measure the conductivity of ions in liquids or gases and thus detect the concentration of certain substances in the liquid or gas. It can be used to measure the conductivity of water, as well as the concentration of different ions in water, which is important for environmental monitoring and water quality testing.

One of the roles of a conductivity sensor is to measure the conductivity of water. Conductivity is the concentration of ions in a liquid, which means that the higher the conductivity, the higher the concentration of ions in the liquid. Conductivity can be used to detect the concentration of ions in water to determine the quality of the water.

Additionally, conductivity sensors can be used to measure the concentration of different ions in water. Conductivity sensors can detect ions in water such as calcium, magnesium, and chloride ions to determine the quality of the water. The measurement of conductivity can help us to better detect the quality of water and thus better protect the environment.

How To Choose The Right Sensor?

The following factors need to be considered when selecting a conductivity sensor for an application:

What is the measurement range? (This determines which electrode constant is required).
What is the process temperature? (We have standardised on the Pt1000).
What is the chemical composition of the process? (This determines the material of construction we provide to ensure chemical compatibility).