AFA4000/2
Airflow Monitor / p.39
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Objects are detected when infra-red light from the transmitter is not detected by the
receiver due to an obstruction in its path.
Figure 9: Sash Light Curtain Transmitter and Receiver
A separate Sash Light Curtain Control Box includes a sensitivity potentiometer that
allows the beam sensitivity adjusted to sense glass or other objects that are partially
transparent to infra-red light.
Figure 10: Sash Light Curtain Control Box
4.3.5
Under Sash sensor
The Under Sash Sensor is an alternative to the Sash Light Curtain which detects whether
the opening below the sash is clear from obstructions before the sash is closed.
A sensor on one side of the fume hood detects the reflection of a beam of light from a
self-adhesive strip of retro-reflective tape mounted on the opposite inside wall of the
fume hood.
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 ...