Very Early Smoke Detection Apparatus VESDA is a fire detection system that offers the earliest possible warning of a potential fire, ensures business continuity and freedom from nuisance alarms, can adapt to the ‘unique’ characteristics of any given environment, global sales and distribution channels.
The VESDA system takes constant air samples through the pipe network via a high efficiency aspirator. A sample of this air is then passed through a dual stage filter. The first stage removes dust and dirt from the air sample before it allows the sample to enter the laser detection chamber for smoke detection. The second (ultra fine) stage has the unique feature of providing an additional clean air supply to keep the optical surfaces within the detector clear from contamination and to ensure the stable calibration and the calibrated detection chamber where it is exposed to a stable controlled laser light source. When smoke is present, light is scattered within the detection chamber and is instantly identified by the highly sensitive receiver system. The signal is then processed and presented via a bar graph display, alarm threshold indicators and/or graphic display. The VESDA detectors are able to communicate this information to a fire alarm control panel, a software management system or a building management system via relays or a High Level Interface (HLI).
In environments where down time must be eliminated or minimized:
In environments where smoke is difficult to detect: