Aspirated Fire Alarm System
Aspirated Fire Alarm Systems are systems that check the protected areas air by drawing the air through specially fitted pipework back to a controller. This controller filters the air and then passes the air through a sensing chamber before exhausting the return air back into the protected space.
The controller then shows the smoke contamination by obscuration level on a bar graph on the unit. The levels can be programmed to suit the environment and the speed at which an alarm is wished to be generated if smoke is detected.
The most common type of Aspirated System is called VESDA (Very Early Smoke Detection Apparatus).
The output signal of the Aspirated System can then be connected to a FAP for further signaling of alerting devices or connection to the New Zealand Fire Service.