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1.1 General Description
All systems comprise of the following components :-
1 – SM6 Airflow Sensor,
1 – AFA1000 Alarm unit,
1 – DC 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.
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
Disabled
- will be displayed if the alarm disable function is activated ( when enabled )
This display will alternate on/off with the velocity reading
