Product Guide
VESDA ECO Detector by Xtralis
28
Principles of Operation
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Event Logging
Logging of events to the microSD Card is integral to the operation of the unit, this
allows the retrieval of historical data from the unit either using the Communications
bus and Xtralis VSC or where accessible the internal data storage card can be
removed and the data read using a PC.
An event can be raised and stored when a monitored Gas level alters by more than
a set amount.
An event is notable occurrence at a particular point in time. On occurrence of an
event its time and value are logged locally.
Event logging to a local removable memory device is integral to the operation of the
unit which allows the retrieval of historical event data from the unit either using the
Communications bus and Xtralis VSC or where accessible the internal data storage
card can be removed and the data read using a PC.
Where the internal data card is removed the data can be displayed using Xtralis
VSC.
Display of events requires Xtralis VSC. (See Section Event Logging)
All events are logged – it is possible to selectively retrieve and display particular
events.
Event Log Retrieval
The default settings are indicated and altered using Xtralis VSC. It is possible to
filter all logged data using the settings provided in Xtralis VSC (See Section Event
Logging on page 59)
Removal of Memory Card
It is possible to remove the internal memory card for off-line data analysis. The
memory card is situated underneath the USB interface connector, behind the same
cover. The card release mechanism is a standard push to release type.
If the microSD Card is removed or inserted whilst the unit is powered, it may cause
the unit to undergo a restart. Furthermore, if the microSD Card is absent while the
unit is powered it will indicate a fault condition and the event data for that period will
be lost.