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1.1 General Description
All systems comprise of the following components :-
1 – SM6 Airflow Sensor,
1 – AFA1000 /1 Alarm unit,
1 – AC power supply
If the Sash Alarm System option is included there will also be a sash micro switch or proximity
switch.
Operator Features
--- the alarm has the following operator features :-
Digital Display
The digital display is a back-lit, full graphic unit with a visual display of approx 56 x 27 mm.
The display operates through the software allowing the generation of figures, wording and Icons.
The display shows the fume cupboard face velocity in
m/sec
or
fpm
when enabled or the
alternative with no velocity reading but showing
AIR FAIL / AIR SAFE
as continuous display.
All of the above are configurable via the alarm key pad.
An ‘
event time line
’ segmented into 20 x 3 minute segments will scroll across the display
( when enabled) .This takes the form of a graphical ‘ blip’ that will progress from the right hand
side to the left hand side – representing events that have occurred during the past hour. On the
standard alarm this will be limited to airflow alarms but other alarms are available.
Using the diagnostics software and an associated computer via the
com port
on the alarm the
event data can be transferred to a data logger.
The alternative to the event time line is a dynamic ‘
bar graph
’ representing the face velocity
The display shows a
Horn
icon ( with line through it ) when the audible alarm is in the Muted
condition
Sash High
– will be displayed when the Sash alarm is enabled and the sash is raised above
the max safe working opening.
This display will alternate on/off with the velocity reading.
Ext Alarm
– will be displayed when the external alarm input is activated ( when enabled )
This display will alternate on/off with the velocity reading
Air Fail -
will be displayed if the airflow is less than the Low air alarm point.
This display will alternate on/off with the velocity reading
High Air -
will be displayed if the airflow is more than the High air alarm point.
This display will alternate on/off with the velocity reading
Set-back
- will be displayed if the night set-back function is activated ( when enabled )
This display will alternate on/off with the velocity reading
