Background:

Sulfur hexafluoride gas sensor is a kind of high precision gas sensor, which is often used in various environmental detection, safety detection and industrial control fields. Let's take a look at the principle, classification and application of sulfur hexafluoride gas sensors.

Principle of sulfur hexafluoride gas sensor

Sulfur hexafluoride gas sensor adopts the gas sensing technology of "pumping before adjusting". That is, the sensor collects the concentration information of sulfur hexafluoride gas in the measured environment, and completely exhauzes the gas in the environment by vacuuming first. Then, the pressure of the gas is adjusted by the pressure regulator to make it equal to the pressure inside the sensor. At this point, the electrochemical reaction within the sensor occurs, the ammeter pointer deflects, and the current signal is output. By analyzing the current signal, the concentration information of sulfur hexafluoride gas in the measured environment can be obtained.

Classification of sulfur hexafluoride gas sensors

Sulfur hexafluoride gas sensors can be divided into various types according to different measuring principles and working modes.

1.Electrochemical sulfur hexafluoride gas sensor
The electrochemical sulfur hexafluoride gas sensor adopts the principle of electrochemical reaction and reflects the concentration of sulfur hexafluoride gas by measuring the change of battery current. The sensor has the advantages of high sensitivity, good stability and fast response speed. It is suitable for the occasions where the concentration of sulfur hexafluoride gas is required to be high.

2.Diffused sulfur hexafluoride gas sensor
The diffused sulfur hexafluoride gas sensor adopts the diffusion principle and reflects the concentration of sulfur hexafluoride gas by measuring the diffusion velocity of gas molecules under the action of electric field. The sensor has the advantages of wide measuring range, fast response speed and good stability. It is suitable for the occasions where the concentration of sulfur hexafluoride gas is required to be low.

3.Semiconductor sulfur hexafluoride gas sensor
Semiconductor sulfur hexafluoride gas sensor adopts the principle of sensitive effect of semiconductor materials and reflects the gas concentration by measuring the influence of sulfur hexafluoride gas on semiconductor materials. The sensor has the advantages of small size, light weight and fast response speed. It is suitable for the occasions where the concentration of sulfur hexafluoride gas is required to be high.

4.Piezoelectric sulfur hexafluoride gas sensor
The piezoelectric sulfur hexafluoride gas sensor adopts the principle of piezoelectric effect and reflects the concentration of sulfur hexafluoride gas by measuring the voltage change of piezoelectric material. The sensor has the advantages of wide measuring range, fast response speed and good stability. It is suitable for the occasions where the concentration of sulfur hexafluoride gas is required to be high.

Application of sulfur hexafluoride gas sensor

Sulfur hexafluoride gas sensors are widely used in various environmental detection, safety detection and industrial control fields. The following are some common application scenarios:

Environmental detection: sulfur hexafluoride gas sensors can be used to detect the concentration of sulfur hexafluoride gas in the environment to ensure the safety of personnel and equipment.

Safety detection: sulfur hexafluoride gas sensors can be used to detect the concentration of sulfur hexafluoride gas in factories, warehouses and other places to ensure the safety of personnel and equipment.

Industrial control: sulfur hexafluoride gas sensors can be used for automatic control of industrial production lines to ensure the safety and stability of production.