FL4000
22
3.3 Detector Location Guidelines
Several variables are involved in selecting locations to install detectors. There are no hard and
fast rules defining the optimum location to ensure proper flame detection. However, the
following general suggestions should be considered in regard to particular conditions at the site
where the unit(s) is being installed:
3.3.1 Detector Field of View
Each FL4000 Flame Detector has a maximum range of 210 feet (64 m). The FOV
5
has its
vertex at the center of the detector. Horizontal FOV is measured in the horizontal plane going
through the center axis of the detector, and vertical FOV is measured in the vertical plane going
through the same axis. Both horizontal and vertical FOV are defined for high, medium and low
sensitivity settings of the FL4000, as shown in Figure 9 through Figure 14.
Table 5: Maximum Specified Fields of View at High Sensitivity
6
Field of View: Horizontal
Field of View: Vertical
Max. Specified Range
Max Specified FOV
Max Specified Range
Max Specified FOV
210 ft (64 m)
90
°
230 ft (70 m)
75
°
100 ft (31 m)
100
°
100 ft (30 m)
80
°
30 ft (9 m)
90
°
30 ft (9 m)
90
°
5
Maximum specified FOV
is the angle at which FL4000 can detect the flame at 50% of the maximum specified
range.
6
Maximum specified FOV
is the angle at which FL4000 can detect the flame at 50% of the maximum specified
range.