Working Principle of PHOTOELECTRIC SMOKE DETECTOR
1. Photoelectric Smoke Detector, there is a LED inside the smoke detector that sends beam of light travels in a straight line across the chamber, there is a photosensor on the other side that detects the presence of light.
2. When there is a fire with smoke, the smoke particles enters into the detector and interrupts the light beam, scattering the direction of the light beam. The scattered light beam hits the sensor and activates the alarm.
There is a battery in the smoke alarm, it automatically activates a low battery chirping to warn low battery, and its time to replace the battery. The chirping sound is different from the smoke alarm sound.
Some smoke alarm contains both optical and ionization smoke detection design.
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1. Photoelectric Smoke Detector, there is a LED inside the smoke detector that sends beam of light travels in a straight line across the chamber, there is a photosensor on the other side that detects the presence of light.
2. When there is a fire with smoke, the smoke particles enters into the detector and interrupts the light beam, scattering the direction of the light beam. The scattered light beam hits the sensor and activates the alarm.
There is a battery in the smoke alarm, it automatically activates a low battery chirping to warn low battery, and its time to replace the battery. The chirping sound is different from the smoke alarm sound.
Some smoke alarm contains both optical and ionization smoke detection design.
Safety Courses in Chennai | Fire & Safety Courses in Chennai | Nebosh courses in chennai
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