Gas Detectors Working Principle

Gas Detection Technologies:

There are variety of gas detection technologies in use today for sensing or measuring the hazardous gas like H2S, Hydrocarbon etc… in oil & gas industries. Among the most commonly employed are:

• Catalytic Bead
• Metal Oxide Semiconductor (also known as “solid state”)
• Point Infrared Short Path
• Open (Long Path) Infrared
• Photoacoustic Infrared
• Electrochemical for Toxic Gas Detection
• Electrochemical for Oxygen Detection
• Thermal Conductivity
• Photoionization
• NDIR

The Operation of each Gas Detection technology summarizes as follows:

Also Read : Gas Detection System Question & Answers

1. Catalytic Bead

Catalytic Bead Gas Detection Sensor Principle

Catalytic Bead Gas Detection Sensor Diagram

2. Metal Oxide Semiconductor

Metal Oxide Semiconductor Gas Detection Sensor Principle

Metal Oxide Semiconductor Gas Detection Sensor Diagram

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3. Point Infrared Short Path

Point Infrared Short Path Gas Detection Sensor Principle

Point Infrared Short Path Gas Detection Sensor Diagram

4. Open (Long Path) Infrared

Open & Long Path Infrared Gas Detection Sensor Principle

Point Infrared Short Path Gas Detection Sensor Diagram

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5. Thermal Conductivity

Thermal Conductivity Gas Detection Sensor Principle

Thermal Conductivity Gas Detection Sensor Diagram

6. Photoionization

Photo-ionization Gas Detection Sensor Principle

Photo-ionization Gas Detection Sensor Diagram

7. Electrochemical for Toxic Gas Detection

Electrochemical Toxic Gas Detection Sensor Principle

Electrochemical Toxic Gas Detection Sensor Diagram

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8. Photoacoustic Infrared

Photoacoustic Gas Detection Sensor Principle

 

Photoacoustic Gas Detection Sensor Working

 

Photoacoustic Gas Detection Sensor Working

Comparison of Gas Detection Technologies

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