What type of smoke particles can a Photoelectric Detector effectively identify?

A photoelectric detector is designed to effectively identify visible smoke particles, which are typically larger and tend to scatter light due to their size. This response mechanism is based on the principle that when smoke particles enter the detection chamber, they disrupt the light beam emitted by the detector, causing a change in the light intensity that triggers the alarm.

Visible smoke particles generally arise from smoldering fires that produce larger particles as opposed to fires that burn rapidly and produce finer, invisible particles. As a result, photoelectric detectors are particularly adept at detecting smoke that is more apparent and triggers visible light scattering, thus allowing for an appropriate alarm response to potentially dangerous situations.

In contrast, other types of particles or gases, like invisible smoke particles, combustion gases, or electrical smoke, do not typically produce the same detectable alterations in light patterns that photoelectric technology relies on. This specificity makes photoelectric detectors a valuable tool for detecting certain fire conditions more effectively.