Aspirating Smoke Detection (ASD) systems differ significantly from traditional point-type smoke detectors. A typical ASD system consists of a network of pipes installed above or below the ceiling in parallel runs, spaced several meters apart. Small holes—known as sampling points—are drilled into the pipes at regular intervals to create a matrix that ensures even coverage across the protected area. Air is drawn through these holes and into a highly sensitive smoke detector using the suction pressure of an aspirator.
For localized protection, such as specific equipment or cabinets, flexible capillary tubes can be used to route sampling points directly into and around the protected objects. In areas with high airflow—such as data centers or cleanrooms—sampling points can be strategically placed in return air paths to effectively intercept smoke before it disperses.
The configuration of sampling pipework and sampling points in aspirating detection systems is highly flexible. Unlike traditional point-type smoke detectors, which must be installed on the ceiling, aspirating systems can be installed virtually anywhere smoke or fire may be present.
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