VESDA by Xtralis VESDA VLI Product Guide
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B Glossary
Term Description
A Aspirator Impeller type fan used to draw sampled air into the detector.
AutoLearn Smoke A feature which allows the detector to learn its environment
(background pollution, differences between day and night
operations within the facility etc) in order to set appropriate
alarm thresholds for that environment.
AutoLearn Flow A feature which allows the detector to learn its environment
(airflow patterns, differences between day and night
operations within the facility etc) in order to set appropriate
airflow thresholds for that environment.
B BACnet The data communications protocol used on the USBand
Ethernet ports.
C Capillary Tubes Flexible tubes attached to the sampling pipe network for
sampling specific areas or objects away from the sampling
pipe.
Commissioning The process of making a smoke detection system
operational.
D Disable Disables the alarm relay outputs from actuating and
indicates a fault. This is previously referred to as Isolate.
E Event Log All VESDA detectors provide internal data logging of events
which have occurred in the protected zone.
F Fire This indicates a serious situation and may lead to automatic
generation of a fire alarm.
Fire Alarm ControlPanel (FACP) A panel which all fire detection products report their status
to.
G General Purpose Input (GPI)
Unmonitored
An input to a detector which can be used to place the
detector in a certain condition. Applying a voltage between
5V and 30VDC triggers the selected condition.
General Purpose Input (GPI) Monitored An input to a detector which is monitored for open or short
circuits. It can be used to monitor the power supply.
H High Airflow Environment Where there are 10 or more air exchanges per hour.
High Level Interface (HLI) A communications interface between a VESDA device and
other pieces of equipment using VESDAnet or another
communications protocol.
O Obscuration The reduction in light transmission per meter or per foot due
to the presence of particulates.
Table B-1: Glossary