AFA4000/2
Airflow Monitor / p.22
3.6
Functions
3.6.1
Airflow functions
The AFA4000/2 airflow display can be set up using the pushbutton menus to display
airflow in units of m/sec or fpm and can also be set to show plain text
Air Safe
&
Air Fail
only.
The AFA4000/2 has 5 programmable airflow alarms:
Alarm
Description
Safe airflow
•
Airflow reading above warning level
(for example, > 0.45 m/sec)
•
Green Safe LED Halo illuminated
Warning airflow
•
Airflow reads between warning level and air fail level (for
example, > 0.4 m/sec and < 0.45 m/sec)
•
Amber Warning LED Halo illuminated.
Low airflow
•
Airflow reads below alarm level for longer than the
warning to low air delay time
•
Air Fail toggles on / off with display
•
Red Alarm LED Halo illuminated
•
Audible alarm sounds - can be muted by pressing the
Mute
pushbutton
•
Low air relay operates (if configured)
•
Reset: when airflow rises 0.02 m/sec above Low air level
for longer than the low air to warning air delay time, the
Low air alarm resets automatically
High airflow
If configured:
•
Airflow reading above high level (for example > 1.50
m/sec)
•
High Air toggles on / off with display
•
Red Alarm LED Halo illuminated
•
High air relay operates (when configured)
Содержание AFA4000/2
Страница 1: ...AFA4000 2 Airflow monitor Installation and operating manual Issue 1 ...
Страница 50: ...AFA4000 2 Airflow Monitor p 50 Figure 21 AFA4000 2 typical connection diagram ...
Страница 51: ...AFA4000 2 Airflow Monitor p 51 Figure 22 AFA4000 2 AS typical connection diagram ...
Страница 52: ...AFA4000 2 Airflow Monitor p 52 5 4 Dimensions Figure 23 AFA4000 2 and AFA4000 2 AS dimensions ...
Страница 53: ...AFA4000 2 Airflow Monitor p 53 Figure 24 SM7 airflow sensor dimensions ...
Страница 64: ...AFA4000 2 Airflow Monitor p 64 Figure 34 Side views of a rack and pinion drive typical installation ...
Страница 87: ...AFA4000 2 Airflow Monitor p 87 Figure 61 Adjusting the personnel sensor beam angle away from the fume hood ...
Страница 90: ...AFA4000 2 Airflow Monitor p 90 6 10 Auto Sash System Control Box general wiring diagram ...
Страница 127: ...AFA4000 2 Airflow Monitor p 127 ...
Страница 140: ...AFA4000 2 Airflow Monitor p 140 Figure 69 Typical connection diagram ...
Страница 144: ...AFA4000 2 Airflow Monitor p 144 Figure 70 Connection diagram with RS232 485 converter ...