Texas Fire Alarm License Practice Test

In Photo Electric Light Scattering Smoke Detection, the mechanism relies on a light source and a photosensitive sensor to detect smoke particles in the air. This technology operates on the principle of light scattering, where light emitted from a source is interrupted by smoke particles present in the environment. When smoke enters the detection chamber, the particles scatter the light, causing the photosensitive sensor to detect a significant change in light intensity. This response triggers the alarm system, indicating the presence of smoke.

The use of a light source and sensor is fundamental to this type of smoke detection because it effectively allows for the identification of smoke at various stages, making it a reliable option for early fire detection.