rev. 0 NOV11
MAFP 12-GB
- Diagonal application with FULL area coverage
When ceiling is too low for full area coverage with centre vertical
mounting, and only one detector is preferred, then the detector can
be mounted on a ceiling corner so as it looks diagonally down 45°
towards the floor.
For example, a room 10m high with a floor of 16x20m is fully under
the detector field of view.
The smallest detectable flame size is 20cm under the detector corner
(2% of 10m distance) and 55cm on the most distant floor corner 2%
of 27.5m distance).
As you see, the smallest flame on the opposite corner is more than
two times as much as under the detector corner. This disadvantage
must be considered when choosing this type of application.
Also, the diagonal mounting makes the detector seeing other strong
infrared lights entering into its field of view, like lamps and sun, which
can cause false alarms. It is recommended to properly choose the
detector position in order to avoid false alarms.
The limit of this application could be a room 10m high with a floor of
30x30m. In this case the side length is 3 times as much as the ceiling
height, and the smallest detectable flame size is 80cm in the worst
case (2% of 40m distance).
RIV-601P/F
IR flame detector applications
length
width
RIV
x 1
y 1
height
O
A
B
Note:
Remember that the detector sensitivity is 2% of the distance, while 4% for the explosion-proof model
Содержание GTS RIV-601F
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