Aspirating Smoke Detector ("ASD")

Aspirating Smoke Detector ("ASD")

An aspirating smoke detector ("ASD") is a type of active smoke detection and alarm initiating device that includes three primary components;

  1. an aspirator;
  2. a sampling chamber; and
  3. a sampling pipe network.

An aspirating smoke detector helps overcome limitations of a fixed point smoke detector by actively drawing a representative sample of the air using an aspirator from within the protected area through the sampling pipe network and into the sample chamber. The sampling chamber is based on a nephelometer which is an instrument that measures the concentration of suspended particulates from smoke being drawing from the protected area.

Disclaimer

In preparing this definition, we have drawn from various sources including Legislation, Codes, Standards and industry information, research and knowledge.  Like the english language, these definitions may subtly change from time to time. As such these definitions are provided solely on the basis that users will be responsible for making their own assessment of the definition and and are advised to verify all relevant representations, statements and information.