Aspirating
(also called air-sampling) detection uses a network of
pipes to carry the sampled air to a chamber where
sophisticated laser technology can detect minute amounts
of smoke, giving very early warning of fires. This is also
known as High Sensitivity Smoke Detection (HSSD) or Early
Warning Smoke Detection, (EWSD).
These
systems are typically used in high-value applications such
as IT server rooms, communications centres, archive
stores, museums, etc.
Emerald
Fire Technology supply VESDA aspirating systems, a
well-respected range with a proven record. For full
details click on the Vesda logo below:
A
Wider Window of Opportunity
...All fires have four stages: Incipient (pre-combustion),
Visible Smoke, Flaming Fire, and Intense Heat. This chart
shows the progression of fire over a time period.
Note
that the incipient stage of smouldering
fires provides the widest window of opportunity to detect
and control the spread of fire.
VESDA smoke detectors can be configured to generate
multiple alarms within this window, to provide the Time
needed to help minimize or prevent fire loss.
