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Aspirating Smoke Detector System

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Nisha Saini
Aspirating Smoke Detector System


What is Aspirating Smoke Detector System?

Aspirating smoke detectors (ASDs) are very early smoke detection devices that use a powerful fan to pull air through a network of pipes into a detection chamber. This system detects smoke particles in the air and if the concentration reaches a predetermined level, it triggers an alarm. Large buildings, such as airports, office buildings, and hotels, are often fitted with aspirating smoke detectors when traditional smoke detectors may not be feasible or when there is a need to detect and deal with fire to circumvent the risk of damage due to cost of life and assets involved. Additionally, they are used in environments prone to smoke contamination, such as cleanrooms and laboratories.


Why ASD?

There are some shortcomings of common smoke detectors that cause alerts when false smoke is detected. Like other smoke detectors, ASD does some smart work and is built differently than other common smoke detectors. For avoiding false alarms, air samples captured by an Aspirating Smoke Detector are filtered and containments are removed.

In contrast to passive smoke detection systems such as spot detectors, smoke is drawn to the detector by bore holes in piping running through the protected area. When a threat is detected to the Aspirating Smoke Detector system's ability to detect smoke, an alarm can be raised. In contrast, passive devices are usually only electrically monitored, without a way to determine whether smoke reaches the sensor.


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