EARLY WARNING SMOKE SYSTEMS DETAIL

To illustrate the advantage that an Xtralis VESDA system provides, let's look at how a fire progresses:

All fires (both smoldering and fast flaming types) are comprised of four stages: Incipient (Pre-Combustion), Visible Smoke, Fast Flaming, and Intense Heat.

Notice how smoke levels are extremely low in the first stage (Incipient Stage) of a fire and rise dramatically as the fire ignites and begins to burn, sometimes uncontrollably.

This Incipient Stage is by far the most docile stage of the fire. During this stage, the density of the smoke is so low that it is virtually invisible to the human eye and below the detectable range of conventional devices.
During the second stage, (Visible Smoke), smoke becomes more visible and reaches a critical density. It is only at this late point in the progression of the fire that conventional-type smoke detection systems alarm to the presence of smoke.

Smoke becomes more visable when it transitions into the third stage (Flaming Fire). This is where smoke density increases, and flaming fire erupts, narrowing response options, increasing danger and damage, which results in business disruption.

During stage four, (Intense Heat), both smoke density and flaming fire increase exponentially, causing devastating damage and triggering fire suppression systems.

Clearly the BEST time for detection is the incipient stage, the point where damage is minimized and response options maximized, and it is here where VESDA affords you a critical advantage: ... time

Xtralis VESDA monitors the entire progression of a fire - easily detecting fire long before smoke is visible and long before any other forms of detection.

With the world's widest sensitivity range, Xtralis VESDA produces multi-level warnings at the very early stage of an impending fire. This provides the valuable time necessary to initiate a flexible, appropriate response. Within the Incipient Stage of the fire, VESDA easily detects minute levels of smoke present in the air and offers up to three levels of alarm, all with adjustable thresholds, before there is visible smoke, flaming fire, or intense heat, and often long before disruption, damage, or injury can take place.

To provide complete protection, Xtralis VESDA offers a fourth alarm, Fire 2, operating throughout the later stages of a fire. Fire 2 is typically programmed to release suppression.

This enormously wide range allows a single detector to uniquely monitor the entire progression of a fire.

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