VESDA Products
VESDA works by continually drawing air into the pipe network via a high efficiency aspirator. A sample of this air is then passes 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 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 bar graph display. The VESDA detectors
are able to communicate this information to a fire alarm control panel, a
software management system via relays of a High Level Interface (HLI).
Fire Chief Installs the following VESDA detection systems:
LaserSCANNER (protects areas up to 20,000 sq ft.)
The LaserSCANNER locates the origin of smoke by identifying the first sector (pipe) with the highest level of smoke and then continues to sample from all sectors to monitor fire growth. The LaserSCANNER also provides four alarm levels for each individual pipe (Alert, Action, Fire 1 and Fire 2) and provides individual pipe addressability and individual pipe settings.
LaserCOMPACT (protects areas up to 8,000 sq ft.)
The LaserCOMPACT offers a simple, cost effective solution for the protection of single and smaller environments that occupy less than 8,000 sq. ft. (800 sq. m). It offers the same wide sensitivity range as the LaserPLUS and LaserSCANNER - 0.0015 to 6% obs/ft (0.005 to 20% obs/m). The LaserCOMPACT supports three configurable alarm levels (Alert, Pre-Alarm, Fire) and comes in two versions. One version interfaces via relays only (RO), and the other across either relays or VESDAnet (VN).
LaserFOCUS (protects areas up to 5,000 sq ft.)
Delivers the most advanced air sampling smoke detection technology to small environments – cost effectively. Available in two models, VLF-250 protects areas up to 2,500 sq.ft., while VLF-500 is available for areas up to 5,000. sq. ft. Optional VESDAnet interface card provides seamless VESDAnet communication from the detector to other VESDAnet devices, including configuration and monitoring tools.
