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-Sensor-1
Catalytic Bead Gas Detection Sensor Principle
Catalytic-Bead-Sensor-2
Catalytic Bead Gas Detection Sensor Diagram

2. Metal Oxide Semiconductor

Metal-Oxide-Semi-Conductor-Sensor-1
Metal Oxide Semiconductor Gas Detection Sensor Principle
Metal-Oxide-Semi-Conductor-Sensor-2
Metal Oxide Semiconductor Gas Detection Sensor Diagram

Also Read : Fire & Gas System Interview Questions

3. Point Infrared Short Path

Point-Infrared-Short-Path-Sensor-1
Point Infrared Short Path Gas Detection Sensor Principle
Point-Infrared-Short-Path-Sensor-2
Point Infrared Short Path Gas Detection Sensor Diagram

4. Open (Long Path) Infrared

Open-Path-Infrared-sensor-1
Open & Long Path Infrared Gas Detection Sensor Principle
Open-Path-Infrared-sensor-2
Point Infrared Short Path Gas Detection Sensor Diagram

Also Read : Control Systems & SCADA related interview questions

5. Thermal Conductivity

Thermal-Conductivity-sensor-1
Thermal Conductivity Gas Detection Sensor Principle
Thermal-Conductivity-sensor-2
Thermal Conductivity Gas Detection Sensor Diagram

6. Photoionization

Photoionization-1
Photo-ionization Gas Detection Sensor Principle
Photoionization-2
Photo-ionization Gas Detection Sensor Diagram

7. Electrochemical for Toxic Gas Detection

ElectroChemical-Toxic-gas-sensor-1
Electrochemical Toxic Gas Detection Sensor Principle
ElectroChemical-Toxic-gas-sensor-2
Electrochemical Toxic Gas Detection Sensor Diagram

Also Read : Basics of Systems Questions & Answers for Interview

8. Photoacoustic Infrared

PhotoAccoustic-Infrared-sensor-1
Photoacoustic Gas Detection Sensor Principle

 

PhotoAccoustic-Infrared-sensor-2
Photoacoustic Gas Detection Sensor Working

 

PhotoAccoustic-Infrared-sensor-3
Photoacoustic Gas Detection Sensor Working
Comparison-of-Different-Gas-Detection-Technologies
Comparison of Gas Detection Technologies

Also Read : Gas Detectors Questions & Answers

 

Share With Your Friends

Recommended Articles

1 thought on “Gas Detectors Working Principle”

  2. Gas Detectors Explanations was very good. covered all major types. Principles, Advantages, Disadvantages, Diagrams are very good.

    Reply

Leave a Comment

X
Basics of Gas MonitoringFire & Gas SystemCategories of Gas Monitoring : 1. Combustible/ Flammable Gas • Explosive hazard. • To avoid an explosion, atmospheric levels must be maintained below …
Fire & Gas System

Gas Detectors Working Principle

 
X
Gas chromatograph Working AnimationAnimationGas chromatograph Working Animation shows the operation philosophy of GC functionality.  Pic Credits : Emerson GC Working Principle Briefly : The samp…
Send this to a friend