5 Installation
US FL5000 Multi-Spectrum Flame Detector 23
5.3.1 Optical Sensitivity Range
The distance at which the detector will respond to a flame
is a function of the intensity of that flame. The maximum
distance is 310 ft (95 m) for an n-heptane fire with a
surface area of 1 ft
2
(0.092 m
2
). The following table shows
the specified ranges for a given sensitivity setting.
Sensitivity Setting Specified Range
High 310 ft (95 m)
Medium 140 ft (43 m)
Low 70 ft (21 m)
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