Detection Distance And Reflector Selection - Siemens FDL241-9 Technical Manual

Planning
4

Detection distance and reflector selection

4.5
40
Building Technologies
Fire Safety
Detection distance and reflector selection
The detection distance between the detector and reflector is 5 to 100 m. Select the
reflectors depending on the detection distance.
The table below shows guidelines for the type and number of reflectors depending
on the detection distance.
Detection distance
5 ... 10 m
10 ... 30 m
30 ... 50 m
50 ... 65 m
20 ... 100 m
Type and number of reflectors depending on the detection distance
If you are using more than one reflector, always position them close together and in
a square shape. The detection distance details are guidelines. They depend on
detector and reflector tolerances and may vary by a few meters. It is important that
a sufficiently high signal intensity is reached.
If there is a danger of moisture condensation, always use the reflector for long
distance and the built-in heating unit, even for short distances. You may not use
the reflectors for middle distance and short distance if there is a danger of moisture
condensation.
See also
 Accessories [➙ 30]
Type and number of reflectors
1 reflector for short distance (foil) DLR1193
+ filter for short distance DLF1191
1 reflector for short distance (foil) DLR1193
1 reflector for middle distance (foil)
DLR1192
4 reflectors for middle distance (foil)
DLR1192
1 reflector for long distance (prism)
DLR1191
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2012-09-07