Products - Fire Alarm System - Aspirating Smoke Detection System
VESDA works by continuously drawing air into a distributed pipe network via a High - efficiency aspirator. The air sample then passes through a dual-stage filter. The first stage removes dust and dirt from the air sample before it enters the laser detection chamber. The second, ultra-fine stage provides an additional clean-air supply to keep the detector's optical surfaces free from contamination, ensuring stable calibration and long detector life as well as minimizing nuisance alarms.
From the filter, the air sample goes through the calibrated detection chamber where it is exposed to a 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. 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).
This diagram shows the progression of a fire over time.ote that the incipient stage of a fire provides the widest window of opportunity to detect and control the spread. VESDA detectors can be configured to generate multiple alarms within the incipient stage.
They also can be configured tgenerate an additional alarm (Fire 2) in the advanced stages of a fire. This feature is unique to VESDA and takes advantage of its wide sensitivity range that enables one detector to monitor the entire progression of a fire.
VESDAVLI: An industrial-strength detector that boasts a ruggedized enclosure providing protection against dust and water spray and incorporates an industry-first, patented, fail-safe, "intelligent filtration" technology designed to reduce contamination that might enter a detector, improving detector longevity and reducing service and maintenance.
VESDA VFT: A unique and versatile high-sensitivity ASD that is able to pinpoint the source of incipient smoke to speed response, enhance investigation, and minimize business disruption and downtime. The VFT provides intelligent addressability to identify up to 15 protected areas.
VESDA VLP (LaserPLUS™): The VESDA VLP detects fire at the earliest possible stage and reliably measures very low to extremely high concentrations of smoke. It has the world's widest sensitivity range of 0.0015 to 6% obs/ft. (0.005 to 20% obs/m) and supports four configurable alarms, protecting areas up to 20,000 sq. ft. (2,000 m).
VESDA VLS (LaserSCANNER™): The VESDA VLS locates the origin of smoke by identifying the first sector (pipe) with the highest level of smoke and then continues to sample air from all sectors to monitor fire growth. The VESDA VLS also provides four alarm levels for each individual pipe and provides individual pipe addressability and settings. It protects areas up to 20,000 sq. ft. (2,000 m).
VESDAVLC(LaserCOMPACT™): The VESDA VLC offers cost-effective protection of single environments and small areas. It offers the same wide sensitivity range as the VESDA VLP and VESDA VLS and supports three configurable alarm levels. It is available in two versions; one version interfaces via relays only (RO) and the other across either relays or VESDAnet (VN). An explosion-proof version of the VN VLC is also available.
VESDAVLF(LaserFOCUS™): The VESDA VLF delivers the most advanced and cost-effective ASD technology for small environments. The VESDA VLF-250 protects areas up to 2,500 sq. ft. (250 m), and the VESDA VLF-500 covers up to 5,000 sq. ft. (500 Sq.m). In addition to the features found in all VESDA products, the VESDA VLF provides a new range of features and built-in intelligence for quick installation, commissioning and servicing.
RemoteDisplays andProgrammers: The VESDA display module monitors and reports the status of a detector, providing visual representation of smoke levels along with all alarm and fault conditions. The menu-driven VESDA Programmer allows the user to conveniently configure, commission and maintain the VESDA system, as well as program each individual detector.
VESDAnet™: VESDAnet is a comprehensive, fault-tolerant, "closed," two-wire communications loop that links VESDA detectors, displays, programmers and remote units on a daisy-chained loop. It enables a number of units to be programmed together from one or more locations and automatically detects communication failures. It also easily interfaces with systems external to the network, such as intelligent fire alarm panels and building management systems.
VESDA Pipe: A key element in the performance of a VESDA ASD system is the network of sampling pipes that actively transports air from a protected area to the detector. Xtralis offers an extensive range of pipe and fittings to suit all application needs.
VVVVSMM™: A software package that allows the user to monitor, configure and control a VESDA system from a central location via a VESDA net communication loop or directly to VESDA detectors.
VVSC™: A software package that can be used to configure, install, commission and maintain the standard range of VESDA ASDs. The software provides high-level programming flexibility through its on-line and off-line configuration capabilities.
VESSDA ASPIRE2™: The latest version of VESDA sampling pipe network design and modeling software. It aids in the design and evaluation process for basic to very complex pipe-network layouts.