AFA4000/2
Airflow Monitor / p.37
4.3.2
Personnel sensor
Figure 5: Detection area clear
Figure 6: Obstruction present
The Personnel Sensor is a Passive Infra-Red (PIR) occupancy detector which detects the
presence / absence of the fume hood user.
Note: If the user is detected, the sash will not automatically close. The Sash can be
opened / closed manually or using the
Up
/
Down
pushbuttons.
On power up, the Personnel Sensor ‘learns’ the reflection characteristics of the
environment within its field of view and stores this information as reference background
data. The sensor then 're-learns' the background every three minutes. A stationary
object, such as a stool, that is left in the field becomes part of the background and is
'ignored' by the sensor. When the user is not present at the fume hood, the sash will
close automatically. This follows a pre-set delay time, if the Sash Light Curtain is not
broken and the sash is open.
Green LED
Red LED
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 ...