Working Principle of Beam Detector

Beam detectors are line-type photoelectric detectors consisting of a separate light source and photosensitive receiver.

These devices are usually installed in large open areas where there is an unobstructed line of sight between the light source and the receiver and where the use of spot-type detectors would be economically unfeasible due to the number of detectors required.

Advantages of Beam Detectors:

  • Cover a large area economically
  • Quick acting
  • Disadvantages of Beam Smoke Detectors:
  • Unobstructed LoS between the light source and the receiver
  • Correct alignment needs to be maintained
  • Typical locations or hazards for beam detectors:
  • High atriums
  • Manufacturing spaces