Home » Gas Detectors Working Principle
Fire & Gas System How It Works

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

 

Related Articles

Gas Detectors Standards

S Bharadwaj Reddy

Ultrasonic Level Switch Working Principle

S Bharadwaj Reddy

Deluge Valve Operation

S Bharadwaj Reddy

Thermal Mass Flow Meter Working Principle

S Bharadwaj Reddy

Types of Fire and Gas Detectors

S Bharadwaj Reddy

Hydrogen Sulfide Gas (H2S)

S Bharadwaj Reddy

1 comment

Kumaresan June 25, 2015 at 8:37 am

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

Reply

Leave a Comment

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More

Gas Detectors Working Principle

WordPress Image Lightbox

Send this to a friend