| VESDA
Early
Warning Smoke Detectors
A
fire detection system that offers the earliest possible warning
of a potential fire. A system that will ensure business continuity
and freedom from nuisance alarms. A system that can adapt to the
‘unique’ characteristics of any given environment.
One that delivers high performance through its high quality design
and its dedicated global sales and distribution channels.
With over 50,000 units installed worldwide, the VESDA name has become
synonymous with high performance and very early warning smoke detection.
It is the product chosen when reliable performance is crucial.
VESDA… When Performance Counts.
How
VESDA works:
VESDA works by continually drawing air into 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, ahs 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 long life
of the detector.
From the filter, the air sample is passed through to 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/pro 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).
|
|
