Gas Detector

Gas detectors are designed to detect the presence of gas throughout an area.

They are usually used in industrial environments due to different applications (toxic and flammable gases).

Detectors are divided into two types, fixed and portable, and according to the mechanism of operation, they are divided into the following models:

  1. Electrochemical
  2. Catalytic beads
  3. Infrared
  4. Photoionization

Electrochemical:

Catalytic beads:

Infrared:

Point Diagnosis:

Open Path:

Photoionization:

Design Standards:

  • Sensors must be positioned close to the gas source and should not be placed near ventilation fans or external openings.
  • The installation height of the sensors depends on the type of application and the density of the target gas relative to air.
  • A sensor for detecting gases heavier than air should be installed at a distance of 0.3 meters from the floor.
  • A sensor for detecting gases lighter than air should be installed on or near the ceiling.
  • A sensor for detecting gases with a density close to that of air should be installed at a height of 1.2 to 1.8 meters from the floor.
  • The breathing zone refers to the area from 1.2 to 1.8 meters above the floor where the majority of human breathing occurs.